Home / 20,404.28-30,606.42-10,538.48

Finding the Fourth Proportional to 20,404.28, 30,606.42 and 10,538.48

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Solution

The fourth proportional to 20,404.28, 30,606.42 and 10,538.48 is: 15,807.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.28 : 30,606.42 = 10,538.48 : x
  2. Step 2: Convert to fraction form
    20,404.28/30,606.42 = 10,538.48/x
  3. Step 3: Cross multiply
    20,404.28x = 30,606.42 × 10,538.48
  4. Step 4: Simplify right side
    20,404.28x = 322,545,145.04
  5. Step 5: Solve for x
    x = 322,545,145.04/20,404.28
  6. Step 6: Final answer
    x = 15,807.72

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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.