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Finding the Fourth Proportional to 12,248.56, 16,911.12 and 9,410.86

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Solution

The fourth proportional to 12,248.56, 16,911.12 and 9,410.86 is: 12,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,248.56 : 16,911.12 = 9,410.86 : x
  2. Step 2: Convert to fraction form
    12,248.56/16,911.12 = 9,410.86/x
  3. Step 3: Cross multiply
    12,248.56x = 16,911.12 × 9,410.86
  4. Step 4: Simplify right side
    12,248.56x = 159,148,182.76
  5. Step 5: Solve for x
    x = 159,148,182.76/12,248.56
  6. Step 6: Final answer
    x = 12,993.22

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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.