Home / 12,915.95-19,377.18-3,681.95

Finding the Fourth Proportional to 12,915.95, 19,377.18 and 3,681.95

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Solution

The fourth proportional to 12,915.95, 19,377.18 and 3,681.95 is: 5,523.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.95 : 19,377.18 = 3,681.95 : x
  2. Step 2: Convert to fraction form
    12,915.95/19,377.18 = 3,681.95/x
  3. Step 3: Cross multiply
    12,915.95x = 19,377.18 × 3,681.95
  4. Step 4: Simplify right side
    12,915.95x = 71,345,711.02
  5. Step 5: Solve for x
    x = 71,345,711.02/12,915.95
  6. Step 6: Final answer
    x = 5,523.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.