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Finding the Fourth Proportional to 16,690.71, 25,041.30 and 10,442.12

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Solution

The fourth proportional to 16,690.71, 25,041.30 and 10,442.12 is: 15,666.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,690.71 : 25,041.30 = 10,442.12 : x
  2. Step 2: Convert to fraction form
    16,690.71/25,041.30 = 10,442.12/x
  3. Step 3: Cross multiply
    16,690.71x = 25,041.30 × 10,442.12
  4. Step 4: Simplify right side
    16,690.71x = 261,484,153.93
  5. Step 5: Solve for x
    x = 261,484,153.93/16,690.71
  6. Step 6: Final answer
    x = 15,666.45

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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.