Home / 12,334.20-18,501.30-12,139.80

Finding the Fourth Proportional to 12,334.20, 18,501.30 and 12,139.80

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Solution

The fourth proportional to 12,334.20, 18,501.30 and 12,139.80 is: 18,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,334.20 : 18,501.30 = 12,139.80 : x
  2. Step 2: Convert to fraction form
    12,334.20/18,501.30 = 12,139.80/x
  3. Step 3: Cross multiply
    12,334.20x = 18,501.30 × 12,139.80
  4. Step 4: Simplify right side
    12,334.20x = 224,602,081.74
  5. Step 5: Solve for x
    x = 224,602,081.74/12,334.20
  6. Step 6: Final answer
    x = 18,209.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.