Home / 20,404.17-30,628.13-10,540.80

Finding the Fourth Proportional to 20,404.17, 30,628.13 and 10,540.80

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Solution

The fourth proportional to 20,404.17, 30,628.13 and 10,540.80 is: 15,822.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.17 : 30,628.13 = 10,540.80 : x
  2. Step 2: Convert to fraction form
    20,404.17/30,628.13 = 10,540.80/x
  3. Step 3: Cross multiply
    20,404.17x = 30,628.13 × 10,540.80
  4. Step 4: Simplify right side
    20,404.17x = 322,844,940
  5. Step 5: Solve for x
    x = 322,844,940/20,404.17
  6. Step 6: Final answer
    x = 15,822.50

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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.