Home / 21,062.45-29,071.17-12,115.13

Finding the Fourth Proportional to 21,062.45, 29,071.17 and 12,115.13

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Solution

The fourth proportional to 21,062.45, 29,071.17 and 12,115.13 is: 16,721.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.45 : 29,071.17 = 12,115.13 : x
  2. Step 2: Convert to fraction form
    21,062.45/29,071.17 = 12,115.13/x
  3. Step 3: Cross multiply
    21,062.45x = 29,071.17 × 12,115.13
  4. Step 4: Simplify right side
    21,062.45x = 352,200,858.45
  5. Step 5: Solve for x
    x = 352,200,858.45/21,062.45
  6. Step 6: Final answer
    x = 16,721.74

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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.