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Finding the Fourth Proportional to 40,554.40, 60,820.80 and 12,474.40

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Solution

The fourth proportional to 40,554.40, 60,820.80 and 12,474.40 is: 18,708.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,554.40 : 60,820.80 = 12,474.40 : x
  2. Step 2: Convert to fraction form
    40,554.40/60,820.80 = 12,474.40/x
  3. Step 3: Cross multiply
    40,554.40x = 60,820.80 × 12,474.40
  4. Step 4: Simplify right side
    40,554.40x = 758,702,987.52
  5. Step 5: Solve for x
    x = 758,702,987.52/40,554.40
  6. Step 6: Final answer
    x = 18,708.28

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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.