Home / 20,512.16-28,307.03-11,559.43

Finding the Fourth Proportional to 20,512.16, 28,307.03 and 11,559.43

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Solution

The fourth proportional to 20,512.16, 28,307.03 and 11,559.43 is: 15,952.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.16 : 28,307.03 = 11,559.43 : x
  2. Step 2: Convert to fraction form
    20,512.16/28,307.03 = 11,559.43/x
  3. Step 3: Cross multiply
    20,512.16x = 28,307.03 × 11,559.43
  4. Step 4: Simplify right side
    20,512.16x = 327,213,131.79
  5. Step 5: Solve for x
    x = 327,213,131.79/20,512.16
  6. Step 6: Final answer
    x = 15,952.15

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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.