Home / 28,760.31-43,140.50-9,040.59

Finding the Fourth Proportional to 28,760.31, 43,140.50 and 9,040.59

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Solution

The fourth proportional to 28,760.31, 43,140.50 and 9,040.59 is: 13,560.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,760.31 : 43,140.50 = 9,040.59 : x
  2. Step 2: Convert to fraction form
    28,760.31/43,140.50 = 9,040.59/x
  3. Step 3: Cross multiply
    28,760.31x = 43,140.50 × 9,040.59
  4. Step 4: Simplify right side
    28,760.31x = 390,015,527.69
  5. Step 5: Solve for x
    x = 390,015,527.69/28,760.31
  6. Step 6: Final answer
    x = 13,560.89

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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.