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Finding the Fourth Proportional to 17,851.74, 24,631.11 and 12,815.10

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Solution

The fourth proportional to 17,851.74, 24,631.11 and 12,815.10 is: 17,681.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,851.74 : 24,631.11 = 12,815.10 : x
  2. Step 2: Convert to fraction form
    17,851.74/24,631.11 = 12,815.10/x
  3. Step 3: Cross multiply
    17,851.74x = 24,631.11 × 12,815.10
  4. Step 4: Simplify right side
    17,851.74x = 315,650,137.76
  5. Step 5: Solve for x
    x = 315,650,137.76/17,851.74
  6. Step 6: Final answer
    x = 17,681.76

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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.