Home / 15,987.87-22,062.96-8,818.45

Finding the Fourth Proportional to 15,987.87, 22,062.96 and 8,818.45

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Solution

The fourth proportional to 15,987.87, 22,062.96 and 8,818.45 is: 12,169.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.87 : 22,062.96 = 8,818.45 : x
  2. Step 2: Convert to fraction form
    15,987.87/22,062.96 = 8,818.45/x
  3. Step 3: Cross multiply
    15,987.87x = 22,062.96 × 8,818.45
  4. Step 4: Simplify right side
    15,987.87x = 194,561,178.56
  5. Step 5: Solve for x
    x = 194,561,178.56/15,987.87
  6. Step 6: Final answer
    x = 12,169.30

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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.