Home / 39,400.60-59,101.68-21,981.28

Finding the Fourth Proportional to 39,400.60, 59,101.68 and 21,981.28

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Solution

The fourth proportional to 39,400.60, 59,101.68 and 21,981.28 is: 32,972.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,400.60 : 59,101.68 = 21,981.28 : x
  2. Step 2: Convert to fraction form
    39,400.60/59,101.68 = 21,981.28/x
  3. Step 3: Cross multiply
    39,400.60x = 59,101.68 × 21,981.28
  4. Step 4: Simplify right side
    39,400.60x = 1,299,130,576.55
  5. Step 5: Solve for x
    x = 1,299,130,576.55/39,400.60
  6. Step 6: Final answer
    x = 32,972.36

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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.