Home / 14,987.01-20,681.86-8,272.76

Finding the Fourth Proportional to 14,987.01, 20,681.86 and 8,272.76

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Solution

The fourth proportional to 14,987.01, 20,681.86 and 8,272.76 is: 11,416.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,987.01 : 20,681.86 = 8,272.76 : x
  2. Step 2: Convert to fraction form
    14,987.01/20,681.86 = 8,272.76/x
  3. Step 3: Cross multiply
    14,987.01x = 20,681.86 × 8,272.76
  4. Step 4: Simplify right side
    14,987.01x = 171,096,064.13
  5. Step 5: Solve for x
    x = 171,096,064.13/14,987.01
  6. Step 6: Final answer
    x = 11,416.29

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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.