Home / 21,255.04-31,882.62-10,159.21

Finding the Fourth Proportional to 21,255.04, 31,882.62 and 10,159.21

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Solution

The fourth proportional to 21,255.04, 31,882.62 and 10,159.21 is: 15,238.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.04 : 31,882.62 = 10,159.21 : x
  2. Step 2: Convert to fraction form
    21,255.04/31,882.62 = 10,159.21/x
  3. Step 3: Cross multiply
    21,255.04x = 31,882.62 × 10,159.21
  4. Step 4: Simplify right side
    21,255.04x = 323,902,231.93
  5. Step 5: Solve for x
    x = 323,902,231.93/21,255.04
  6. Step 6: Final answer
    x = 15,238.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.