Home / 13,582.41-20,280.69-12,167.70

Finding the Fourth Proportional to 13,582.41, 20,280.69 and 12,167.70

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Solution

The fourth proportional to 13,582.41, 20,280.69 and 12,167.70 is: 18,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,582.41 : 20,280.69 = 12,167.70 : x
  2. Step 2: Convert to fraction form
    13,582.41/20,280.69 = 12,167.70/x
  3. Step 3: Cross multiply
    13,582.41x = 20,280.69 × 12,167.70
  4. Step 4: Simplify right side
    13,582.41x = 246,769,351.71
  5. Step 5: Solve for x
    x = 246,769,351.71/13,582.41
  6. Step 6: Final answer
    x = 18,168.30

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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.