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Finding the Fourth Proportional to 28,761.93, 43,141.95 and 9,040.05

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Solution

The fourth proportional to 28,761.93, 43,141.95 and 9,040.05 is: 13,559.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,761.93 : 43,141.95 = 9,040.05 : x
  2. Step 2: Convert to fraction form
    28,761.93/43,141.95 = 9,040.05/x
  3. Step 3: Cross multiply
    28,761.93x = 43,141.95 × 9,040.05
  4. Step 4: Simplify right side
    28,761.93x = 390,005,385.10
  5. Step 5: Solve for x
    x = 390,005,385.10/28,761.93
  6. Step 6: Final answer
    x = 13,559.78

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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.