Home / 20,065.74-27,690.45-11,113.76

Finding the Fourth Proportional to 20,065.74, 27,690.45 and 11,113.76

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Solution

The fourth proportional to 20,065.74, 27,690.45 and 11,113.76 is: 15,336.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,065.74 : 27,690.45 = 11,113.76 : x
  2. Step 2: Convert to fraction form
    20,065.74/27,690.45 = 11,113.76/x
  3. Step 3: Cross multiply
    20,065.74x = 27,690.45 × 11,113.76
  4. Step 4: Simplify right side
    20,065.74x = 307,744,877.14
  5. Step 5: Solve for x
    x = 307,744,877.14/20,065.74
  6. Step 6: Final answer
    x = 15,336.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.