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Finding the Fourth Proportional to 38,152.80, 57,237.90 and 11,860.20

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Solution

The fourth proportional to 38,152.80, 57,237.90 and 11,860.20 is: 17,793.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,152.80 : 57,237.90 = 11,860.20 : x
  2. Step 2: Convert to fraction form
    38,152.80/57,237.90 = 11,860.20/x
  3. Step 3: Cross multiply
    38,152.80x = 57,237.90 × 11,860.20
  4. Step 4: Simplify right side
    38,152.80x = 678,852,941.58
  5. Step 5: Solve for x
    x = 678,852,941.58/38,152.80
  6. Step 6: Final answer
    x = 17,793.00

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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.