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Finding the Fourth Proportional to 28,013.88, 42,014.88 and 8,292.60

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Solution

The fourth proportional to 28,013.88, 42,014.88 and 8,292.60 is: 12,437.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.88 : 42,014.88 = 8,292.60 : x
  2. Step 2: Convert to fraction form
    28,013.88/42,014.88 = 8,292.60/x
  3. Step 3: Cross multiply
    28,013.88x = 42,014.88 × 8,292.60
  4. Step 4: Simplify right side
    28,013.88x = 348,412,593.89
  5. Step 5: Solve for x
    x = 348,412,593.89/28,013.88
  6. Step 6: Final answer
    x = 12,437.14

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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.