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Finding the Fourth Proportional to 38,566.80, 57,850.20 and 12,274.20

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Solution

The fourth proportional to 38,566.80, 57,850.20 and 12,274.20 is: 18,411.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,566.80 : 57,850.20 = 12,274.20 : x
  2. Step 2: Convert to fraction form
    38,566.80/57,850.20 = 12,274.20/x
  3. Step 3: Cross multiply
    38,566.80x = 57,850.20 × 12,274.20
  4. Step 4: Simplify right side
    38,566.80x = 710,064,924.84
  5. Step 5: Solve for x
    x = 710,064,924.84/38,566.80
  6. Step 6: Final answer
    x = 18,411.30

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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.