Home / 39,720.48-59,580.90-13,425.36

Finding the Fourth Proportional to 39,720.48, 59,580.90 and 13,425.36

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Solution

The fourth proportional to 39,720.48, 59,580.90 and 13,425.36 is: 20,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720.48 : 59,580.90 = 13,425.36 : x
  2. Step 2: Convert to fraction form
    39,720.48/59,580.90 = 13,425.36/x
  3. Step 3: Cross multiply
    39,720.48x = 59,580.90 × 13,425.36
  4. Step 4: Simplify right side
    39,720.48x = 799,895,031.62
  5. Step 5: Solve for x
    x = 799,895,031.62/39,720.48
  6. Step 6: Final answer
    x = 20,138.10

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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.