Home / 12,147.08-18,217.35-5,127.14

Finding the Fourth Proportional to 12,147.08, 18,217.35 and 5,127.14

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Solution

The fourth proportional to 12,147.08, 18,217.35 and 5,127.14 is: 7,689.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.08 : 18,217.35 = 5,127.14 : x
  2. Step 2: Convert to fraction form
    12,147.08/18,217.35 = 5,127.14/x
  3. Step 3: Cross multiply
    12,147.08x = 18,217.35 × 5,127.14
  4. Step 4: Simplify right side
    12,147.08x = 93,402,903.88
  5. Step 5: Solve for x
    x = 93,402,903.88/12,147.08
  6. Step 6: Final answer
    x = 7,689.33

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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.