Home / 18,720.12-25,867.98-17,808.96

Finding the Fourth Proportional to 18,720.12, 25,867.98 and 17,808.96

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Solution

The fourth proportional to 18,720.12, 25,867.98 and 17,808.96 is: 24,608.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.12 : 25,867.98 = 17,808.96 : x
  2. Step 2: Convert to fraction form
    18,720.12/25,867.98 = 17,808.96/x
  3. Step 3: Cross multiply
    18,720.12x = 25,867.98 × 17,808.96
  4. Step 4: Simplify right side
    18,720.12x = 460,681,821.10
  5. Step 5: Solve for x
    x = 460,681,821.10/18,720.12
  6. Step 6: Final answer
    x = 24,608.91

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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.