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Finding the Fourth Proportional to 28,497.36, 42,754.64 and 8,507.50

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Solution

The fourth proportional to 28,497.36, 42,754.64 and 8,507.50 is: 12,763.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,497.36 : 42,754.64 = 8,507.50 : x
  2. Step 2: Convert to fraction form
    28,497.36/42,754.64 = 8,507.50/x
  3. Step 3: Cross multiply
    28,497.36x = 42,754.64 × 8,507.50
  4. Step 4: Simplify right side
    28,497.36x = 363,735,099.80
  5. Step 5: Solve for x
    x = 363,735,099.80/28,497.36
  6. Step 6: Final answer
    x = 12,763.82

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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.