Home / 21,209.58-29,252.79-15,542.19

Finding the Fourth Proportional to 21,209.58, 29,252.79 and 15,542.19

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Solution

The fourth proportional to 21,209.58, 29,252.79 and 15,542.19 is: 21,436.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.58 : 29,252.79 = 15,542.19 : x
  2. Step 2: Convert to fraction form
    21,209.58/29,252.79 = 15,542.19/x
  3. Step 3: Cross multiply
    21,209.58x = 29,252.79 × 15,542.19
  4. Step 4: Simplify right side
    21,209.58x = 454,652,420.21
  5. Step 5: Solve for x
    x = 454,652,420.21/21,209.58
  6. Step 6: Final answer
    x = 21,436.18

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Half scale
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Double scale
Find fourth proportional to 21,210.58, 29,254.17 and 15,543.19
Similar ratio
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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.