Home / 15,987.22-22,063.68-8,818.54

Finding the Fourth Proportional to 15,987.22, 22,063.68 and 8,818.54

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Solution

The fourth proportional to 15,987.22, 22,063.68 and 8,818.54 is: 12,170.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.22 : 22,063.68 = 8,818.54 : x
  2. Step 2: Convert to fraction form
    15,987.22/22,063.68 = 8,818.54/x
  3. Step 3: Cross multiply
    15,987.22x = 22,063.68 × 8,818.54
  4. Step 4: Simplify right side
    15,987.22x = 194,569,389.47
  5. Step 5: Solve for x
    x = 194,569,389.47/15,987.22
  6. Step 6: Final answer
    x = 12,170.31

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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.