Home / 20,512.42-28,307.14-11,560.25

Finding the Fourth Proportional to 20,512.42, 28,307.14 and 11,560.25

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Solution

The fourth proportional to 20,512.42, 28,307.14 and 11,560.25 is: 15,953.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.42 : 28,307.14 = 11,560.25 : x
  2. Step 2: Convert to fraction form
    20,512.42/28,307.14 = 11,560.25/x
  3. Step 3: Cross multiply
    20,512.42x = 28,307.14 × 11,560.25
  4. Step 4: Simplify right side
    20,512.42x = 327,237,473.65
  5. Step 5: Solve for x
    x = 327,237,473.65/20,512.42
  6. Step 6: Final answer
    x = 15,953.14

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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.