Home / 12,549.68-18,808.10-5,145.47

Finding the Fourth Proportional to 12,549.68, 18,808.10 and 5,145.47

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Solution

The fourth proportional to 12,549.68, 18,808.10 and 5,145.47 is: 7,711.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,549.68 : 18,808.10 = 5,145.47 : x
  2. Step 2: Convert to fraction form
    12,549.68/18,808.10 = 5,145.47/x
  3. Step 3: Cross multiply
    12,549.68x = 18,808.10 × 5,145.47
  4. Step 4: Simplify right side
    12,549.68x = 96,776,394.54
  5. Step 5: Solve for x
    x = 96,776,394.54/12,549.68
  6. Step 6: Final answer
    x = 7,711.47

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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.