Home / 20,777.91-31,307.12-17,161.16

Finding the Fourth Proportional to 20,777.91, 31,307.12 and 17,161.16

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Solution

The fourth proportional to 20,777.91, 31,307.12 and 17,161.16 is: 25,857.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.91 : 31,307.12 = 17,161.16 : x
  2. Step 2: Convert to fraction form
    20,777.91/31,307.12 = 17,161.16/x
  3. Step 3: Cross multiply
    20,777.91x = 31,307.12 × 17,161.16
  4. Step 4: Simplify right side
    20,777.91x = 537,266,253.12
  5. Step 5: Solve for x
    x = 537,266,253.12/20,777.91
  6. Step 6: Final answer
    x = 25,857.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.