Home / 12,253.80-18,348.30-9,640.20

Finding the Fourth Proportional to 12,253.80, 18,348.30 and 9,640.20

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Solution

The fourth proportional to 12,253.80, 18,348.30 and 9,640.20 is: 14,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,253.80 : 18,348.30 = 9,640.20 : x
  2. Step 2: Convert to fraction form
    12,253.80/18,348.30 = 9,640.20/x
  3. Step 3: Cross multiply
    12,253.80x = 18,348.30 × 9,640.20
  4. Step 4: Simplify right side
    12,253.80x = 176,881,281.66
  5. Step 5: Solve for x
    x = 176,881,281.66/12,253.80
  6. Step 6: Final answer
    x = 14,434.81

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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.