Home / 14,987.25-20,681.52-8,272.71

Finding the Fourth Proportional to 14,987.25, 20,681.52 and 8,272.71

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Solution

The fourth proportional to 14,987.25, 20,681.52 and 8,272.71 is: 11,415.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,987.25 : 20,681.52 = 8,272.71 : x
  2. Step 2: Convert to fraction form
    14,987.25/20,681.52 = 8,272.71/x
  3. Step 3: Cross multiply
    14,987.25x = 20,681.52 × 8,272.71
  4. Step 4: Simplify right side
    14,987.25x = 171,092,217.32
  5. Step 5: Solve for x
    x = 171,092,217.32/14,987.25
  6. Step 6: Final answer
    x = 11,415.85

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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.