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Finding the Fourth Proportional to 28,602.96, 42,908.40 and 8,883.12

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Solution

The fourth proportional to 28,602.96, 42,908.40 and 8,883.12 is: 13,325.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,602.96 : 42,908.40 = 8,883.12 : x
  2. Step 2: Convert to fraction form
    28,602.96/42,908.40 = 8,883.12/x
  3. Step 3: Cross multiply
    28,602.96x = 42,908.40 × 8,883.12
  4. Step 4: Simplify right side
    28,602.96x = 381,160,466.21
  5. Step 5: Solve for x
    x = 381,160,466.21/28,602.96
  6. Step 6: Final answer
    x = 13,325.91

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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.