Home / 15,915.38-23,873.81-5,385.12

Finding the Fourth Proportional to 15,915.38, 23,873.81 and 5,385.12

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Solution

The fourth proportional to 15,915.38, 23,873.81 and 5,385.12 is: 8,077.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,915.38 : 23,873.81 = 5,385.12 : x
  2. Step 2: Convert to fraction form
    15,915.38/23,873.81 = 5,385.12/x
  3. Step 3: Cross multiply
    15,915.38x = 23,873.81 × 5,385.12
  4. Step 4: Simplify right side
    15,915.38x = 128,563,304.78
  5. Step 5: Solve for x
    x = 128,563,304.78/15,915.38
  6. Step 6: Final answer
    x = 8,077.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.