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Finding the Fourth Proportional to 37,060.80, 55,612.80 and 13,689.60

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Solution

The fourth proportional to 37,060.80, 55,612.80 and 13,689.60 is: 20,542.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,060.80 : 55,612.80 = 13,689.60 : x
  2. Step 2: Convert to fraction form
    37,060.80/55,612.80 = 13,689.60/x
  3. Step 3: Cross multiply
    37,060.80x = 55,612.80 × 13,689.60
  4. Step 4: Simplify right side
    37,060.80x = 761,316,986.88
  5. Step 5: Solve for x
    x = 761,316,986.88/37,060.80
  6. Step 6: Final answer
    x = 20,542.38

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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.