Home / 27,731.61-38,269.90-15,156.36

Finding the Fourth Proportional to 27,731.61, 38,269.90 and 15,156.36

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Solution

The fourth proportional to 27,731.61, 38,269.90 and 15,156.36 is: 20,915.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,731.61 : 38,269.90 = 15,156.36 : x
  2. Step 2: Convert to fraction form
    27,731.61/38,269.90 = 15,156.36/x
  3. Step 3: Cross multiply
    27,731.61x = 38,269.90 × 15,156.36
  4. Step 4: Simplify right side
    27,731.61x = 580,032,381.56
  5. Step 5: Solve for x
    x = 580,032,381.56/27,731.61
  6. Step 6: Final answer
    x = 20,915.93

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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.