Home / 14,972.88-20,655.90-8,681.61

Finding the Fourth Proportional to 14,972.88, 20,655.90 and 8,681.61

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Solution

The fourth proportional to 14,972.88, 20,655.90 and 8,681.61 is: 11,976.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,972.88 : 20,655.90 = 8,681.61 : x
  2. Step 2: Convert to fraction form
    14,972.88/20,655.90 = 8,681.61/x
  3. Step 3: Cross multiply
    14,972.88x = 20,655.90 × 8,681.61
  4. Step 4: Simplify right side
    14,972.88x = 179,326,468.00
  5. Step 5: Solve for x
    x = 179,326,468.00/14,972.88
  6. Step 6: Final answer
    x = 11,976.75

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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.