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Finding the Fourth Proportional to 12,492.76, 18,750.48 and 6,654.28

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Solution

The fourth proportional to 12,492.76, 18,750.48 and 6,654.28 is: 9,987.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.76 : 18,750.48 = 6,654.28 : x
  2. Step 2: Convert to fraction form
    12,492.76/18,750.48 = 6,654.28/x
  3. Step 3: Cross multiply
    12,492.76x = 18,750.48 × 6,654.28
  4. Step 4: Simplify right side
    12,492.76x = 124,770,944.05
  5. Step 5: Solve for x
    x = 124,770,944.05/12,492.76
  6. Step 6: Final answer
    x = 9,987.46

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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.