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Finding the Fourth Proportional to 15,978.04, 22,049.85 and 8,808.22

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Solution

The fourth proportional to 15,978.04, 22,049.85 and 8,808.22 is: 12,155.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.04 : 22,049.85 = 8,808.22 : x
  2. Step 2: Convert to fraction form
    15,978.04/22,049.85 = 8,808.22/x
  3. Step 3: Cross multiply
    15,978.04x = 22,049.85 × 8,808.22
  4. Step 4: Simplify right side
    15,978.04x = 194,219,929.77
  5. Step 5: Solve for x
    x = 194,219,929.77/15,978.04
  6. Step 6: Final answer
    x = 12,155.43

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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.