Home / 21,191.04-29,244.96-12,240.18

Finding the Fourth Proportional to 21,191.04, 29,244.96 and 12,240.18

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Solution

The fourth proportional to 21,191.04, 29,244.96 and 12,240.18 is: 16,892.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.04 : 29,244.96 = 12,240.18 : x
  2. Step 2: Convert to fraction form
    21,191.04/29,244.96 = 12,240.18/x
  3. Step 3: Cross multiply
    21,191.04x = 29,244.96 × 12,240.18
  4. Step 4: Simplify right side
    21,191.04x = 357,963,574.49
  5. Step 5: Solve for x
    x = 357,963,574.49/21,191.04
  6. Step 6: Final answer
    x = 16,892.21

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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.