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Finding the Fourth Proportional to 8,475.44, 12,618.21 and 8,434.40

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Solution

The fourth proportional to 8,475.44, 12,618.21 and 8,434.40 is: 12,557.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,475.44 : 12,618.21 = 8,434.40 : x
  2. Step 2: Convert to fraction form
    8,475.44/12,618.21 = 8,434.40/x
  3. Step 3: Cross multiply
    8,475.44x = 12,618.21 × 8,434.40
  4. Step 4: Simplify right side
    8,475.44x = 106,426,998.96
  5. Step 5: Solve for x
    x = 106,426,998.96/8,475.44
  6. Step 6: Final answer
    x = 12,557.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.