Home / 18,720.11-25,833.75-10,763.90

Finding the Fourth Proportional to 18,720.11, 25,833.75 and 10,763.90

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Solution

The fourth proportional to 18,720.11, 25,833.75 and 10,763.90 is: 14,854.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.11 : 25,833.75 = 10,763.90 : x
  2. Step 2: Convert to fraction form
    18,720.11/25,833.75 = 10,763.90/x
  3. Step 3: Cross multiply
    18,720.11x = 25,833.75 × 10,763.90
  4. Step 4: Simplify right side
    18,720.11x = 278,071,901.63
  5. Step 5: Solve for x
    x = 278,071,901.63/18,720.11
  6. Step 6: Final answer
    x = 14,854.18

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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.