Home / 12,915.04-17,818.30-7,249.01

Finding the Fourth Proportional to 12,915.04, 17,818.30 and 7,249.01

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Solution

The fourth proportional to 12,915.04, 17,818.30 and 7,249.01 is: 10,001.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.04 : 17,818.30 = 7,249.01 : x
  2. Step 2: Convert to fraction form
    12,915.04/17,818.30 = 7,249.01/x
  3. Step 3: Cross multiply
    12,915.04x = 17,818.30 × 7,249.01
  4. Step 4: Simplify right side
    12,915.04x = 129,165,034.88
  5. Step 5: Solve for x
    x = 129,165,034.88/12,915.04
  6. Step 6: Final answer
    x = 10,001.13

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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.