Home / 21,681.92-29,918.76-12,248.66

Finding the Fourth Proportional to 21,681.92, 29,918.76 and 12,248.66

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Solution

The fourth proportional to 21,681.92, 29,918.76 and 12,248.66 is: 16,901.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,681.92 : 29,918.76 = 12,248.66 : x
  2. Step 2: Convert to fraction form
    21,681.92/29,918.76 = 12,248.66/x
  3. Step 3: Cross multiply
    21,681.92x = 29,918.76 × 12,248.66
  4. Step 4: Simplify right side
    21,681.92x = 366,464,718.86
  5. Step 5: Solve for x
    x = 366,464,718.86/21,681.92
  6. Step 6: Final answer
    x = 16,901.86

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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.