Home / 21,747.18-30,023.55-14,316.78

Finding the Fourth Proportional to 21,747.18, 30,023.55 and 14,316.78

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Solution

The fourth proportional to 21,747.18, 30,023.55 and 14,316.78 is: 19,765.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.18 : 30,023.55 = 14,316.78 : x
  2. Step 2: Convert to fraction form
    21,747.18/30,023.55 = 14,316.78/x
  3. Step 3: Cross multiply
    21,747.18x = 30,023.55 × 14,316.78
  4. Step 4: Simplify right side
    21,747.18x = 429,840,560.17
  5. Step 5: Solve for x
    x = 429,840,560.17/21,747.18
  6. Step 6: Final answer
    x = 19,765.35

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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.