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Finding the Fourth Proportional to 15,900.65, 23,851.48 and 7,998.85

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Solution

The fourth proportional to 15,900.65, 23,851.48 and 7,998.85 is: 11,998.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.65 : 23,851.48 = 7,998.85 : x
  2. Step 2: Convert to fraction form
    15,900.65/23,851.48 = 7,998.85/x
  3. Step 3: Cross multiply
    15,900.65x = 23,851.48 × 7,998.85
  4. Step 4: Simplify right side
    15,900.65x = 190,784,331.17
  5. Step 5: Solve for x
    x = 190,784,331.17/15,900.65
  6. Step 6: Final answer
    x = 11,998.53

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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.