Home / 20,710.53-28,580.49-11,279.16

Finding the Fourth Proportional to 20,710.53, 28,580.49 and 11,279.16

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Solution

The fourth proportional to 20,710.53, 28,580.49 and 11,279.16 is: 15,565.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.53 : 28,580.49 = 11,279.16 : x
  2. Step 2: Convert to fraction form
    20,710.53/28,580.49 = 11,279.16/x
  3. Step 3: Cross multiply
    20,710.53x = 28,580.49 × 11,279.16
  4. Step 4: Simplify right side
    20,710.53x = 322,363,919.59
  5. Step 5: Solve for x
    x = 322,363,919.59/20,710.53
  6. Step 6: Final answer
    x = 15,565.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.