Home / 15,935.04-21,990.12-8,861.34

Finding the Fourth Proportional to 15,935.04, 21,990.12 and 8,861.34

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Solution

The fourth proportional to 15,935.04, 21,990.12 and 8,861.34 is: 12,228.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,935.04 : 21,990.12 = 8,861.34 : x
  2. Step 2: Convert to fraction form
    15,935.04/21,990.12 = 8,861.34/x
  3. Step 3: Cross multiply
    15,935.04x = 21,990.12 × 8,861.34
  4. Step 4: Simplify right side
    15,935.04x = 194,861,929.96
  5. Step 5: Solve for x
    x = 194,861,929.96/15,935.04
  6. Step 6: Final answer
    x = 12,228.52

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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.