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Finding the Fourth Proportional to 21,602.26, 29,810.65 and 12,042.13

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Solution

The fourth proportional to 21,602.26, 29,810.65 and 12,042.13 is: 16,617.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,602.26 : 29,810.65 = 12,042.13 : x
  2. Step 2: Convert to fraction form
    21,602.26/29,810.65 = 12,042.13/x
  3. Step 3: Cross multiply
    21,602.26x = 29,810.65 × 12,042.13
  4. Step 4: Simplify right side
    21,602.26x = 358,983,722.68
  5. Step 5: Solve for x
    x = 358,983,722.68/21,602.26
  6. Step 6: Final answer
    x = 16,617.88

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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.