Home / 23,126.78-31,915.20-12,516.64

Finding the Fourth Proportional to 23,126.78, 31,915.20 and 12,516.64

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Solution

The fourth proportional to 23,126.78, 31,915.20 and 12,516.64 is: 17,273.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,126.78 : 31,915.20 = 12,516.64 : x
  2. Step 2: Convert to fraction form
    23,126.78/31,915.20 = 12,516.64/x
  3. Step 3: Cross multiply
    23,126.78x = 31,915.20 × 12,516.64
  4. Step 4: Simplify right side
    23,126.78x = 399,471,068.93
  5. Step 5: Solve for x
    x = 399,471,068.93/23,126.78
  6. Step 6: Final answer
    x = 17,273.10

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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.