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Finding the Fourth Proportional to 15,562.49, 21,478.05 and 8,849.12

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Solution

The fourth proportional to 15,562.49, 21,478.05 and 8,849.12 is: 12,212.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,562.49 : 21,478.05 = 8,849.12 : x
  2. Step 2: Convert to fraction form
    15,562.49/21,478.05 = 8,849.12/x
  3. Step 3: Cross multiply
    15,562.49x = 21,478.05 × 8,849.12
  4. Step 4: Simplify right side
    15,562.49x = 190,061,734.43
  5. Step 5: Solve for x
    x = 190,061,734.43/15,562.49
  6. Step 6: Final answer
    x = 12,212.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.