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Finding the Fourth Proportional to 15,393.76, 23,090.68 and 8,815.42

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Solution

The fourth proportional to 15,393.76, 23,090.68 and 8,815.42 is: 13,223.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.76 : 23,090.68 = 8,815.42 : x
  2. Step 2: Convert to fraction form
    15,393.76/23,090.68 = 8,815.42/x
  3. Step 3: Cross multiply
    15,393.76x = 23,090.68 × 8,815.42
  4. Step 4: Simplify right side
    15,393.76x = 203,554,042.29
  5. Step 5: Solve for x
    x = 203,554,042.29/15,393.76
  6. Step 6: Final answer
    x = 13,223.15

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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.