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Finding the Fourth Proportional to 28,592.64, 42,888.96 and 8,876.16

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Solution

The fourth proportional to 28,592.64, 42,888.96 and 8,876.16 is: 13,314.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,592.64 : 42,888.96 = 8,876.16 : x
  2. Step 2: Convert to fraction form
    28,592.64/42,888.96 = 8,876.16/x
  3. Step 3: Cross multiply
    28,592.64x = 42,888.96 × 8,876.16
  4. Step 4: Simplify right side
    28,592.64x = 380,689,271.19
  5. Step 5: Solve for x
    x = 380,689,271.19/28,592.64
  6. Step 6: Final answer
    x = 13,314.24

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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.