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Finding the Fourth Proportional to 15,987.66, 22,062.99 and 8,914.53

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Solution

The fourth proportional to 15,987.66, 22,062.99 and 8,914.53 is: 12,302.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.66 : 22,062.99 = 8,914.53 : x
  2. Step 2: Convert to fraction form
    15,987.66/22,062.99 = 8,914.53/x
  3. Step 3: Cross multiply
    15,987.66x = 22,062.99 × 8,914.53
  4. Step 4: Simplify right side
    15,987.66x = 196,681,186.24
  5. Step 5: Solve for x
    x = 196,681,186.24/15,987.66
  6. Step 6: Final answer
    x = 12,302.06

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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.