Home / 15,156.31-20,915.41-10,376.13

Finding the Fourth Proportional to 15,156.31, 20,915.41 and 10,376.13

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Solution

The fourth proportional to 15,156.31, 20,915.41 and 10,376.13 is: 14,318.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,156.31 : 20,915.41 = 10,376.13 : x
  2. Step 2: Convert to fraction form
    15,156.31/20,915.41 = 10,376.13/x
  3. Step 3: Cross multiply
    15,156.31x = 20,915.41 × 10,376.13
  4. Step 4: Simplify right side
    15,156.31x = 217,021,013.16
  5. Step 5: Solve for x
    x = 217,021,013.16/15,156.31
  6. Step 6: Final answer
    x = 14,318.86

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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.