Home / 28,654.15-42,985.56-8,934.25

Finding the Fourth Proportional to 28,654.15, 42,985.56 and 8,934.25

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Solution

The fourth proportional to 28,654.15, 42,985.56 and 8,934.25 is: 13,402.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.15 : 42,985.56 = 8,934.25 : x
  2. Step 2: Convert to fraction form
    28,654.15/42,985.56 = 8,934.25/x
  3. Step 3: Cross multiply
    28,654.15x = 42,985.56 × 8,934.25
  4. Step 4: Simplify right side
    28,654.15x = 384,043,739.43
  5. Step 5: Solve for x
    x = 384,043,739.43/28,654.15
  6. Step 6: Final answer
    x = 13,402.73

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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.