Home / 12,513.21-17,248.22-8,478.81

Finding the Fourth Proportional to 12,513.21, 17,248.22 and 8,478.81

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Solution

The fourth proportional to 12,513.21, 17,248.22 and 8,478.81 is: 11,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,513.21 : 17,248.22 = 8,478.81 : x
  2. Step 2: Convert to fraction form
    12,513.21/17,248.22 = 8,478.81/x
  3. Step 3: Cross multiply
    12,513.21x = 17,248.22 × 8,478.81
  4. Step 4: Simplify right side
    12,513.21x = 146,244,337.82
  5. Step 5: Solve for x
    x = 146,244,337.82/12,513.21
  6. Step 6: Final answer
    x = 11,687.20

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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.