Home / 39,720.80-59,581.14-10,138.64

Finding the Fourth Proportional to 39,720.80, 59,581.14 and 10,138.64

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Solution

The fourth proportional to 39,720.80, 59,581.14 and 10,138.64 is: 15,207.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720.80 : 59,581.14 = 10,138.64 : x
  2. Step 2: Convert to fraction form
    39,720.80/59,581.14 = 10,138.64/x
  3. Step 3: Cross multiply
    39,720.80x = 59,581.14 × 10,138.64
  4. Step 4: Simplify right side
    39,720.80x = 604,071,450.35
  5. Step 5: Solve for x
    x = 604,071,450.35/39,720.80
  6. Step 6: Final answer
    x = 15,207.94

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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.