Home / 30,323.40-45,485.10-15,561.15

Finding the Fourth Proportional to 30,323.40, 45,485.10 and 15,561.15

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Solution

The fourth proportional to 30,323.40, 45,485.10 and 15,561.15 is: 23,341.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,323.40 : 45,485.10 = 15,561.15 : x
  2. Step 2: Convert to fraction form
    30,323.40/45,485.10 = 15,561.15/x
  3. Step 3: Cross multiply
    30,323.40x = 45,485.10 × 15,561.15
  4. Step 4: Simplify right side
    30,323.40x = 707,800,463.87
  5. Step 5: Solve for x
    x = 707,800,463.87/30,323.40
  6. Step 6: Final answer
    x = 23,341.73

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Half scale
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Double scale
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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.