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Finding the Fourth Proportional to 38,019.60, 57,029.40 and 9,939.60

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Solution

The fourth proportional to 38,019.60, 57,029.40 and 9,939.60 is: 14,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,019.60 : 57,029.40 = 9,939.60 : x
  2. Step 2: Convert to fraction form
    38,019.60/57,029.40 = 9,939.60/x
  3. Step 3: Cross multiply
    38,019.60x = 57,029.40 × 9,939.60
  4. Step 4: Simplify right side
    38,019.60x = 566,849,424.24
  5. Step 5: Solve for x
    x = 566,849,424.24/38,019.60
  6. Step 6: Final answer
    x = 14,909.40

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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.