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Finding the Fourth Proportional to 28,591.17, 42,884.70 and 8,869.22

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Solution

The fourth proportional to 28,591.17, 42,884.70 and 8,869.22 is: 13,303.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,591.17 : 42,884.70 = 8,869.22 : x
  2. Step 2: Convert to fraction form
    28,591.17/42,884.70 = 8,869.22/x
  3. Step 3: Cross multiply
    28,591.17x = 42,884.70 × 8,869.22
  4. Step 4: Simplify right side
    28,591.17x = 380,353,624.51
  5. Step 5: Solve for x
    x = 380,353,624.51/28,591.17
  6. Step 6: Final answer
    x = 13,303.19

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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.