Home / 39,780.57-59,670.99-13,503.90

Finding the Fourth Proportional to 39,780.57, 59,670.99 and 13,503.90

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Solution

The fourth proportional to 39,780.57, 59,670.99 and 13,503.90 is: 20,255.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,780.57 : 59,670.99 = 13,503.90 : x
  2. Step 2: Convert to fraction form
    39,780.57/59,670.99 = 13,503.90/x
  3. Step 3: Cross multiply
    39,780.57x = 59,670.99 × 13,503.90
  4. Step 4: Simplify right side
    39,780.57x = 805,791,081.86
  5. Step 5: Solve for x
    x = 805,791,081.86/39,780.57
  6. Step 6: Final answer
    x = 20,255.90

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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.