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Finding the Fourth Proportional to 28,079.74, 42,105.51 and 9,353.19

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Solution

The fourth proportional to 28,079.74, 42,105.51 and 9,353.19 is: 14,025.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.74 : 42,105.51 = 9,353.19 : x
  2. Step 2: Convert to fraction form
    28,079.74/42,105.51 = 9,353.19/x
  3. Step 3: Cross multiply
    28,079.74x = 42,105.51 × 9,353.19
  4. Step 4: Simplify right side
    28,079.74x = 393,820,835.08
  5. Step 5: Solve for x
    x = 393,820,835.08/28,079.74
  6. Step 6: Final answer
    x = 14,025.09

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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.