Home / 19,390.68-26,765.92-11,432.39

Finding the Fourth Proportional to 19,390.68, 26,765.92 and 11,432.39

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Solution

The fourth proportional to 19,390.68, 26,765.92 and 11,432.39 is: 15,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.68 : 26,765.92 = 11,432.39 : x
  2. Step 2: Convert to fraction form
    19,390.68/26,765.92 = 11,432.39/x
  3. Step 3: Cross multiply
    19,390.68x = 26,765.92 × 11,432.39
  4. Step 4: Simplify right side
    19,390.68x = 305,998,435.01
  5. Step 5: Solve for x
    x = 305,998,435.01/19,390.68
  6. Step 6: Final answer
    x = 15,780.70

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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.