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Finding the Fourth Proportional to 28,146.99, 42,235.02 and 12,363.12

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Solution

The fourth proportional to 28,146.99, 42,235.02 and 12,363.12 is: 18,551.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,146.99 : 42,235.02 = 12,363.12 : x
  2. Step 2: Convert to fraction form
    28,146.99/42,235.02 = 12,363.12/x
  3. Step 3: Cross multiply
    28,146.99x = 42,235.02 × 12,363.12
  4. Step 4: Simplify right side
    28,146.99x = 522,156,620.46
  5. Step 5: Solve for x
    x = 522,156,620.46/28,146.99
  6. Step 6: Final answer
    x = 18,551.06

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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.