Home / 20,512.15-28,307.36-11,559.16

Finding the Fourth Proportional to 20,512.15, 28,307.36 and 11,559.16

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Solution

The fourth proportional to 20,512.15, 28,307.36 and 11,559.16 is: 15,951.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.15 : 28,307.36 = 11,559.16 : x
  2. Step 2: Convert to fraction form
    20,512.15/28,307.36 = 11,559.16/x
  3. Step 3: Cross multiply
    20,512.15x = 28,307.36 × 11,559.16
  4. Step 4: Simplify right side
    20,512.15x = 327,209,303.42
  5. Step 5: Solve for x
    x = 327,209,303.42/20,512.15
  6. Step 6: Final answer
    x = 15,951.97

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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.