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Finding the Fourth Proportional to 28,760.70, 43,141.02 and 9,040.98

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Solution

The fourth proportional to 28,760.70, 43,141.02 and 9,040.98 is: 13,561.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,760.70 : 43,141.02 = 9,040.98 : x
  2. Step 2: Convert to fraction form
    28,760.70/43,141.02 = 9,040.98/x
  3. Step 3: Cross multiply
    28,760.70x = 43,141.02 × 9,040.98
  4. Step 4: Simplify right side
    28,760.70x = 390,037,099.00
  5. Step 5: Solve for x
    x = 390,037,099.00/28,760.70
  6. Step 6: Final answer
    x = 13,561.46

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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.