Home / 12,981.10-17,915.66-7,316.95

Finding the Fourth Proportional to 12,981.10, 17,915.66 and 7,316.95

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Solution

The fourth proportional to 12,981.10, 17,915.66 and 7,316.95 is: 10,098.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.10 : 17,915.66 = 7,316.95 : x
  2. Step 2: Convert to fraction form
    12,981.10/17,915.66 = 7,316.95/x
  3. Step 3: Cross multiply
    12,981.10x = 17,915.66 × 7,316.95
  4. Step 4: Simplify right side
    12,981.10x = 131,087,988.44
  5. Step 5: Solve for x
    x = 131,087,988.44/12,981.10
  6. Step 6: Final answer
    x = 10,098.37

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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.