Home / 12,489.12-17,234.98-6,823.92

Finding the Fourth Proportional to 12,489.12, 17,234.98 and 6,823.92

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Solution

The fourth proportional to 12,489.12, 17,234.98 and 6,823.92 is: 9,417.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.12 : 17,234.98 = 6,823.92 : x
  2. Step 2: Convert to fraction form
    12,489.12/17,234.98 = 6,823.92/x
  3. Step 3: Cross multiply
    12,489.12x = 17,234.98 × 6,823.92
  4. Step 4: Simplify right side
    12,489.12x = 117,610,124.72
  5. Step 5: Solve for x
    x = 117,610,124.72/12,489.12
  6. Step 6: Final answer
    x = 9,417.01

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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.