Home / 15,209.12-20,987.92-8,495.52

Finding the Fourth Proportional to 15,209.12, 20,987.92 and 8,495.52

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Solution

The fourth proportional to 15,209.12, 20,987.92 and 8,495.52 is: 11,723.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.12 : 20,987.92 = 8,495.52 : x
  2. Step 2: Convert to fraction form
    15,209.12/20,987.92 = 8,495.52/x
  3. Step 3: Cross multiply
    15,209.12x = 20,987.92 × 8,495.52
  4. Step 4: Simplify right side
    15,209.12x = 178,303,294.12
  5. Step 5: Solve for x
    x = 178,303,294.12/15,209.12
  6. Step 6: Final answer
    x = 11,723.45

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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.