Home / 39,720.86-59,581.26-10,138.70

Finding the Fourth Proportional to 39,720.86, 59,581.26 and 10,138.70

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Solution

The fourth proportional to 39,720.86, 59,581.26 and 10,138.70 is: 15,208.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720.86 : 59,581.26 = 10,138.70 : x
  2. Step 2: Convert to fraction form
    39,720.86/59,581.26 = 10,138.70/x
  3. Step 3: Cross multiply
    39,720.86x = 59,581.26 × 10,138.70
  4. Step 4: Simplify right side
    39,720.86x = 604,076,520.76
  5. Step 5: Solve for x
    x = 604,076,520.76/39,720.86
  6. Step 6: Final answer
    x = 15,208.04

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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.