Home / 19,840.46-29,753.18-7,990.20

Finding the Fourth Proportional to 19,840.46, 29,753.18 and 7,990.20

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Solution

The fourth proportional to 19,840.46, 29,753.18 and 7,990.20 is: 11,982.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.46 : 29,753.18 = 7,990.20 : x
  2. Step 2: Convert to fraction form
    19,840.46/29,753.18 = 7,990.20/x
  3. Step 3: Cross multiply
    19,840.46x = 29,753.18 × 7,990.20
  4. Step 4: Simplify right side
    19,840.46x = 237,733,818.89
  5. Step 5: Solve for x
    x = 237,733,818.89/19,840.46
  6. Step 6: Final answer
    x = 11,982.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.