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Finding the Fourth Proportional to 28,585.95, 42,883.08 and 8,866.10

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Solution

The fourth proportional to 28,585.95, 42,883.08 and 8,866.10 is: 13,300.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,585.95 : 42,883.08 = 8,866.10 : x
  2. Step 2: Convert to fraction form
    28,585.95/42,883.08 = 8,866.10/x
  3. Step 3: Cross multiply
    28,585.95x = 42,883.08 × 8,866.10
  4. Step 4: Simplify right side
    28,585.95x = 380,205,568.38
  5. Step 5: Solve for x
    x = 380,205,568.38/28,585.95
  6. Step 6: Final answer
    x = 13,300.43

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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.