Home / 20,257.79-27,957.15-11,307.04

Finding the Fourth Proportional to 20,257.79, 27,957.15 and 11,307.04

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Solution

The fourth proportional to 20,257.79, 27,957.15 and 11,307.04 is: 15,604.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,257.79 : 27,957.15 = 11,307.04 : x
  2. Step 2: Convert to fraction form
    20,257.79/27,957.15 = 11,307.04/x
  3. Step 3: Cross multiply
    20,257.79x = 27,957.15 × 11,307.04
  4. Step 4: Simplify right side
    20,257.79x = 316,112,613.34
  5. Step 5: Solve for x
    x = 316,112,613.34/20,257.79
  6. Step 6: Final answer
    x = 15,604.50

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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.