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Finding the Fourth Proportional to 38,030.80, 57,015.40 and 15,860.80

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Solution

The fourth proportional to 38,030.80, 57,015.40 and 15,860.80 is: 23,778.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,030.80 : 57,015.40 = 15,860.80 : x
  2. Step 2: Convert to fraction form
    38,030.80/57,015.40 = 15,860.80/x
  3. Step 3: Cross multiply
    38,030.80x = 57,015.40 × 15,860.80
  4. Step 4: Simplify right side
    38,030.80x = 904,309,856.32
  5. Step 5: Solve for x
    x = 904,309,856.32/38,030.80
  6. Step 6: Final answer
    x = 23,778.35

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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.