Home / 15,740.57-21,723.30-8,668.32

Finding the Fourth Proportional to 15,740.57, 21,723.30 and 8,668.32

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Solution

The fourth proportional to 15,740.57, 21,723.30 and 8,668.32 is: 11,963.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.57 : 21,723.30 = 8,668.32 : x
  2. Step 2: Convert to fraction form
    15,740.57/21,723.30 = 8,668.32/x
  3. Step 3: Cross multiply
    15,740.57x = 21,723.30 × 8,668.32
  4. Step 4: Simplify right side
    15,740.57x = 188,304,515.86
  5. Step 5: Solve for x
    x = 188,304,515.86/15,740.57
  6. Step 6: Final answer
    x = 11,963.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.