Home / 21,440.08-29,577.42-13,888.92

Finding the Fourth Proportional to 21,440.08, 29,577.42 and 13,888.92

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Solution

The fourth proportional to 21,440.08, 29,577.42 and 13,888.92 is: 19,160.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.08 : 29,577.42 = 13,888.92 : x
  2. Step 2: Convert to fraction form
    21,440.08/29,577.42 = 13,888.92/x
  3. Step 3: Cross multiply
    21,440.08x = 29,577.42 × 13,888.92
  4. Step 4: Simplify right side
    21,440.08x = 410,798,420.19
  5. Step 5: Solve for x
    x = 410,798,420.19/21,440.08
  6. Step 6: Final answer
    x = 19,160.30

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Double scale
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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.