Home / 20,007.71-29,987.60-9,319.66

Finding the Fourth Proportional to 20,007.71, 29,987.60 and 9,319.66

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Solution

The fourth proportional to 20,007.71, 29,987.60 and 9,319.66 is: 13,968.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,007.71 : 29,987.60 = 9,319.66 : x
  2. Step 2: Convert to fraction form
    20,007.71/29,987.60 = 9,319.66/x
  3. Step 3: Cross multiply
    20,007.71x = 29,987.60 × 9,319.66
  4. Step 4: Simplify right side
    20,007.71x = 279,474,189.62
  5. Step 5: Solve for x
    x = 279,474,189.62/20,007.71
  6. Step 6: Final answer
    x = 13,968.32

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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.