Home / 39,438.60-59,158.20-13,143.31

Finding the Fourth Proportional to 39,438.60, 59,158.20 and 13,143.31

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Solution

The fourth proportional to 39,438.60, 59,158.20 and 13,143.31 is: 19,715.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,438.60 : 59,158.20 = 13,143.31 : x
  2. Step 2: Convert to fraction form
    39,438.60/59,158.20 = 13,143.31/x
  3. Step 3: Cross multiply
    39,438.60x = 59,158.20 × 13,143.31
  4. Step 4: Simplify right side
    39,438.60x = 777,534,721.87
  5. Step 5: Solve for x
    x = 777,534,721.87/39,438.60
  6. Step 6: Final answer
    x = 19,715.07

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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.