Home / 14,288.72-19,717.60-7,915.28

Finding the Fourth Proportional to 14,288.72, 19,717.60 and 7,915.28

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Solution

The fourth proportional to 14,288.72, 19,717.60 and 7,915.28 is: 10,922.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.72 : 19,717.60 = 7,915.28 : x
  2. Step 2: Convert to fraction form
    14,288.72/19,717.60 = 7,915.28/x
  3. Step 3: Cross multiply
    14,288.72x = 19,717.60 × 7,915.28
  4. Step 4: Simplify right side
    14,288.72x = 156,070,324.93
  5. Step 5: Solve for x
    x = 156,070,324.93/14,288.72
  6. Step 6: Final answer
    x = 10,922.62

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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.