Home / 30,257.55-45,386.33-19,128.15

Finding the Fourth Proportional to 30,257.55, 45,386.33 and 19,128.15

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Solution

The fourth proportional to 30,257.55, 45,386.33 and 19,128.15 is: 28,692.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,257.55 : 45,386.33 = 19,128.15 : x
  2. Step 2: Convert to fraction form
    30,257.55/45,386.33 = 19,128.15/x
  3. Step 3: Cross multiply
    30,257.55x = 45,386.33 × 19,128.15
  4. Step 4: Simplify right side
    30,257.55x = 868,156,432.55
  5. Step 5: Solve for x
    x = 868,156,432.55/30,257.55
  6. Step 6: Final answer
    x = 28,692.23

Related Problems

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Half scale
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Double scale
Find fourth proportional to 30,258.55, 45,387.83 and 19,129.15
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.