Home / 20,345.10-30,481.77-17,818.08

Finding the Fourth Proportional to 20,345.10, 30,481.77 and 17,818.08

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Solution

The fourth proportional to 20,345.10, 30,481.77 and 17,818.08 is: 26,695.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.10 : 30,481.77 = 17,818.08 : x
  2. Step 2: Convert to fraction form
    20,345.10/30,481.77 = 17,818.08/x
  3. Step 3: Cross multiply
    20,345.10x = 30,481.77 × 17,818.08
  4. Step 4: Simplify right side
    20,345.10x = 543,126,616.40
  5. Step 5: Solve for x
    x = 543,126,616.40/20,345.10
  6. Step 6: Final answer
    x = 26,695.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.