Home / 20,829.30-31,246.65-10,304.70

Finding the Fourth Proportional to 20,829.30, 31,246.65 and 10,304.70

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Solution

The fourth proportional to 20,829.30, 31,246.65 and 10,304.70 is: 15,458.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.30 : 31,246.65 = 10,304.70 : x
  2. Step 2: Convert to fraction form
    20,829.30/31,246.65 = 10,304.70/x
  3. Step 3: Cross multiply
    20,829.30x = 31,246.65 × 10,304.70
  4. Step 4: Simplify right side
    20,829.30x = 321,987,354.26
  5. Step 5: Solve for x
    x = 321,987,354.26/20,829.30
  6. Step 6: Final answer
    x = 15,458.39

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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.