Home / 12,689.11-17,510.70-6,946.55

Finding the Fourth Proportional to 12,689.11, 17,510.70 and 6,946.55

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Solution

The fourth proportional to 12,689.11, 17,510.70 and 6,946.55 is: 9,586.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689.11 : 17,510.70 = 6,946.55 : x
  2. Step 2: Convert to fraction form
    12,689.11/17,510.70 = 6,946.55/x
  3. Step 3: Cross multiply
    12,689.11x = 17,510.70 × 6,946.55
  4. Step 4: Simplify right side
    12,689.11x = 121,639,016.67
  5. Step 5: Solve for x
    x = 121,639,016.67/12,689.11
  6. Step 6: Final answer
    x = 9,586.09

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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.