Home / 17,618.18-26,431.15-5,139.18

Finding the Fourth Proportional to 17,618.18, 26,431.15 and 5,139.18

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Solution

The fourth proportional to 17,618.18, 26,431.15 and 5,139.18 is: 7,709.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,618.18 : 26,431.15 = 5,139.18 : x
  2. Step 2: Convert to fraction form
    17,618.18/26,431.15 = 5,139.18/x
  3. Step 3: Cross multiply
    17,618.18x = 26,431.15 × 5,139.18
  4. Step 4: Simplify right side
    17,618.18x = 135,834,384.23
  5. Step 5: Solve for x
    x = 135,834,384.23/17,618.18
  6. Step 6: Final answer
    x = 7,709.90

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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.