Home / 28,401.30-39,161.48-23,280.75

Finding the Fourth Proportional to 28,401.30, 39,161.48 and 23,280.75

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Solution

The fourth proportional to 28,401.30, 39,161.48 and 23,280.75 is: 32,100.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,401.30 : 39,161.48 = 23,280.75 : x
  2. Step 2: Convert to fraction form
    28,401.30/39,161.48 = 23,280.75/x
  3. Step 3: Cross multiply
    28,401.30x = 39,161.48 × 23,280.75
  4. Step 4: Simplify right side
    28,401.30x = 911,708,509.11
  5. Step 5: Solve for x
    x = 911,708,509.11/28,401.30
  6. Step 6: Final answer
    x = 32,100.94

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.