Home / 12,077.40-18,118.68-5,057.76

Finding the Fourth Proportional to 12,077.40, 18,118.68 and 5,057.76

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Solution

The fourth proportional to 12,077.40, 18,118.68 and 5,057.76 is: 7,587.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,077.40 : 18,118.68 = 5,057.76 : x
  2. Step 2: Convert to fraction form
    12,077.40/18,118.68 = 5,057.76/x
  3. Step 3: Cross multiply
    12,077.40x = 18,118.68 × 5,057.76
  4. Step 4: Simplify right side
    12,077.40x = 91,639,934.96
  5. Step 5: Solve for x
    x = 91,639,934.96/12,077.40
  6. Step 6: Final answer
    x = 7,587.72

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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.