Home / 28,230.18-38,956.32-15,654.66

Finding the Fourth Proportional to 28,230.18, 38,956.32 and 15,654.66

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Solution

The fourth proportional to 28,230.18, 38,956.32 and 15,654.66 is: 21,602.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,230.18 : 38,956.32 = 15,654.66 : x
  2. Step 2: Convert to fraction form
    28,230.18/38,956.32 = 15,654.66/x
  3. Step 3: Cross multiply
    28,230.18x = 38,956.32 × 15,654.66
  4. Step 4: Simplify right side
    28,230.18x = 609,847,944.45
  5. Step 5: Solve for x
    x = 609,847,944.45/28,230.18
  6. Step 6: Final answer
    x = 21,602.69

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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.