Home / 18,209.43-25,130.29-10,143.73

Finding the Fourth Proportional to 18,209.43, 25,130.29 and 10,143.73

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Solution

The fourth proportional to 18,209.43, 25,130.29 and 10,143.73 is: 13,999.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,209.43 : 25,130.29 = 10,143.73 : x
  2. Step 2: Convert to fraction form
    18,209.43/25,130.29 = 10,143.73/x
  3. Step 3: Cross multiply
    18,209.43x = 25,130.29 × 10,143.73
  4. Step 4: Simplify right side
    18,209.43x = 254,914,788.40
  5. Step 5: Solve for x
    x = 254,914,788.40/18,209.43
  6. Step 6: Final answer
    x = 13,999.05

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Half scale
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Double scale
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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.