Home / 38,154.84-57,221.32-13,188.36

Finding the Fourth Proportional to 38,154.84, 57,221.32 and 13,188.36

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Solution

The fourth proportional to 38,154.84, 57,221.32 and 13,188.36 is: 19,778.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,154.84 : 57,221.32 = 13,188.36 : x
  2. Step 2: Convert to fraction form
    38,154.84/57,221.32 = 13,188.36/x
  3. Step 3: Cross multiply
    38,154.84x = 57,221.32 × 13,188.36
  4. Step 4: Simplify right side
    38,154.84x = 754,655,367.84
  5. Step 5: Solve for x
    x = 754,655,367.84/38,154.84
  6. Step 6: Final answer
    x = 19,778.76

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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.