Home / 15,935.32-21,990.45-8,861.68

Finding the Fourth Proportional to 15,935.32, 21,990.45 and 8,861.68

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Solution

The fourth proportional to 15,935.32, 21,990.45 and 8,861.68 is: 12,228.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,935.32 : 21,990.45 = 8,861.68 : x
  2. Step 2: Convert to fraction form
    15,935.32/21,990.45 = 8,861.68/x
  3. Step 3: Cross multiply
    15,935.32x = 21,990.45 × 8,861.68
  4. Step 4: Simplify right side
    15,935.32x = 194,872,330.96
  5. Step 5: Solve for x
    x = 194,872,330.96/15,935.32
  6. Step 6: Final answer
    x = 12,228.96

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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.