Home / 12,683.20-18,951.41-9,156.46

Finding the Fourth Proportional to 12,683.20, 18,951.41 and 9,156.46

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Solution

The fourth proportional to 12,683.20, 18,951.41 and 9,156.46 is: 13,681.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,683.20 : 18,951.41 = 9,156.46 : x
  2. Step 2: Convert to fraction form
    12,683.20/18,951.41 = 9,156.46/x
  3. Step 3: Cross multiply
    12,683.20x = 18,951.41 × 9,156.46
  4. Step 4: Simplify right side
    12,683.20x = 173,527,827.61
  5. Step 5: Solve for x
    x = 173,527,827.61/12,683.20
  6. Step 6: Final answer
    x = 13,681.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.