Home / 21,488.76-29,668.32-14,772.24

Finding the Fourth Proportional to 21,488.76, 29,668.32 and 14,772.24

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Solution

The fourth proportional to 21,488.76, 29,668.32 and 14,772.24 is: 20,395.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,488.76 : 29,668.32 = 14,772.24 : x
  2. Step 2: Convert to fraction form
    21,488.76/29,668.32 = 14,772.24/x
  3. Step 3: Cross multiply
    21,488.76x = 29,668.32 × 14,772.24
  4. Step 4: Simplify right side
    21,488.76x = 438,267,543.44
  5. Step 5: Solve for x
    x = 438,267,543.44/21,488.76
  6. Step 6: Final answer
    x = 20,395.20

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Half scale
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Double scale
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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.