Home / 18,915.52-26,084.04-12,539.88

Finding the Fourth Proportional to 18,915.52, 26,084.04 and 12,539.88

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Solution

The fourth proportional to 18,915.52, 26,084.04 and 12,539.88 is: 17,292.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.52 : 26,084.04 = 12,539.88 : x
  2. Step 2: Convert to fraction form
    18,915.52/26,084.04 = 12,539.88/x
  3. Step 3: Cross multiply
    18,915.52x = 26,084.04 × 12,539.88
  4. Step 4: Simplify right side
    18,915.52x = 327,090,731.52
  5. Step 5: Solve for x
    x = 327,090,731.52/18,915.52
  6. Step 6: Final answer
    x = 17,292.19

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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.