Home / 20,400.81-30,576.61-10,534.71

Finding the Fourth Proportional to 20,400.81, 30,576.61 and 10,534.71

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Solution

The fourth proportional to 20,400.81, 30,576.61 and 10,534.71 is: 15,789.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.81 : 30,576.61 = 10,534.71 : x
  2. Step 2: Convert to fraction form
    20,400.81/30,576.61 = 10,534.71/x
  3. Step 3: Cross multiply
    20,400.81x = 30,576.61 × 10,534.71
  4. Step 4: Simplify right side
    20,400.81x = 322,115,692.80
  5. Step 5: Solve for x
    x = 322,115,692.80/20,400.81
  6. Step 6: Final answer
    x = 15,789.36

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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.