Home / 21,677.47-29,914.28-12,117.38

Finding the Fourth Proportional to 21,677.47, 29,914.28 and 12,117.38

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Solution

The fourth proportional to 21,677.47, 29,914.28 and 12,117.38 is: 16,721.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,677.47 : 29,914.28 = 12,117.38 : x
  2. Step 2: Convert to fraction form
    21,677.47/29,914.28 = 12,117.38/x
  3. Step 3: Cross multiply
    21,677.47x = 29,914.28 × 12,117.38
  4. Step 4: Simplify right side
    21,677.47x = 362,482,578.91
  5. Step 5: Solve for x
    x = 362,482,578.91/21,677.47
  6. Step 6: Final answer
    x = 16,721.63

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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.