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Finding the Fourth Proportional to 9,620.10, 14,430.15 and 8,818.20

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Solution

The fourth proportional to 9,620.10, 14,430.15 and 8,818.20 is: 13,227.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,620.10 : 14,430.15 = 8,818.20 : x
  2. Step 2: Convert to fraction form
    9,620.10/14,430.15 = 8,818.20/x
  3. Step 3: Cross multiply
    9,620.10x = 14,430.15 × 8,818.20
  4. Step 4: Simplify right side
    9,620.10x = 127,247,948.73
  5. Step 5: Solve for x
    x = 127,247,948.73/9,620.10
  6. Step 6: Final answer
    x = 13,227.30

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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.