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Finding the Fourth Proportional to 8,899.28, 13,348.90 and 8,358

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Solution

The fourth proportional to 8,899.28, 13,348.90 and 8,358 is: 12,536.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.28 : 13,348.90 = 8,358 : x
  2. Step 2: Convert to fraction form
    8,899.28/13,348.90 = 8,358/x
  3. Step 3: Cross multiply
    8,899.28x = 13,348.90 × 8,358
  4. Step 4: Simplify right side
    8,899.28x = 111,570,106.20
  5. Step 5: Solve for x
    x = 111,570,106.20/8,899.28
  6. Step 6: Final answer
    x = 12,536.98

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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.