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Finding the Fourth Proportional to 38,573.80, 57,860.70 and 20,103.40

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Solution

The fourth proportional to 38,573.80, 57,860.70 and 20,103.40 is: 30,155.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,573.80 : 57,860.70 = 20,103.40 : x
  2. Step 2: Convert to fraction form
    38,573.80/57,860.70 = 20,103.40/x
  3. Step 3: Cross multiply
    38,573.80x = 57,860.70 × 20,103.40
  4. Step 4: Simplify right side
    38,573.80x = 1,163,196,796.38
  5. Step 5: Solve for x
    x = 1,163,196,796.38/38,573.80
  6. Step 6: Final answer
    x = 30,155.10

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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.