Home / 13,842.32-20,767.32-7,988.24

Finding the Fourth Proportional to 13,842.32, 20,767.32 and 7,988.24

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Solution

The fourth proportional to 13,842.32, 20,767.32 and 7,988.24 is: 11,984.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,842.32 : 20,767.32 = 7,988.24 : x
  2. Step 2: Convert to fraction form
    13,842.32/20,767.32 = 7,988.24/x
  3. Step 3: Cross multiply
    13,842.32x = 20,767.32 × 7,988.24
  4. Step 4: Simplify right side
    13,842.32x = 165,894,336.32
  5. Step 5: Solve for x
    x = 165,894,336.32/13,842.32
  6. Step 6: Final answer
    x = 11,984.58

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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.