Home / 20,864.56-28,776.33-18,341.30

Finding the Fourth Proportional to 20,864.56, 28,776.33 and 18,341.30

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Solution

The fourth proportional to 20,864.56, 28,776.33 and 18,341.30 is: 25,296.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.56 : 28,776.33 = 18,341.30 : x
  2. Step 2: Convert to fraction form
    20,864.56/28,776.33 = 18,341.30/x
  3. Step 3: Cross multiply
    20,864.56x = 28,776.33 × 18,341.30
  4. Step 4: Simplify right side
    20,864.56x = 527,795,301.43
  5. Step 5: Solve for x
    x = 527,795,301.43/20,864.56
  6. Step 6: Final answer
    x = 25,296.26

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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.