Home / 21,191.94-29,264.49-15,877.53

Finding the Fourth Proportional to 21,191.94, 29,264.49 and 15,877.53

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Solution

The fourth proportional to 21,191.94, 29,264.49 and 15,877.53 is: 21,925.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.94 : 29,264.49 = 15,877.53 : x
  2. Step 2: Convert to fraction form
    21,191.94/29,264.49 = 15,877.53/x
  3. Step 3: Cross multiply
    21,191.94x = 29,264.49 × 15,877.53
  4. Step 4: Simplify right side
    21,191.94x = 464,647,817.91
  5. Step 5: Solve for x
    x = 464,647,817.91/21,191.94
  6. Step 6: Final answer
    x = 21,925.69

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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.