Home / 18,780.23-25,914.96-11,225.05

Finding the Fourth Proportional to 18,780.23, 25,914.96 and 11,225.05

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Solution

The fourth proportional to 18,780.23, 25,914.96 and 11,225.05 is: 15,489.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.23 : 25,914.96 = 11,225.05 : x
  2. Step 2: Convert to fraction form
    18,780.23/25,914.96 = 11,225.05/x
  3. Step 3: Cross multiply
    18,780.23x = 25,914.96 × 11,225.05
  4. Step 4: Simplify right side
    18,780.23x = 290,896,656.96
  5. Step 5: Solve for x
    x = 290,896,656.96/18,780.23
  6. Step 6: Final answer
    x = 15,489.51

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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.