Home / 21,255.62-31,888.56-10,159.16

Finding the Fourth Proportional to 21,255.62, 31,888.56 and 10,159.16

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Solution

The fourth proportional to 21,255.62, 31,888.56 and 10,159.16 is: 15,241.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.62 : 31,888.56 = 10,159.16 : x
  2. Step 2: Convert to fraction form
    21,255.62/31,888.56 = 10,159.16/x
  3. Step 3: Cross multiply
    21,255.62x = 31,888.56 × 10,159.16
  4. Step 4: Simplify right side
    21,255.62x = 323,960,983.21
  5. Step 5: Solve for x
    x = 323,960,983.21/21,255.62
  6. Step 6: Final answer
    x = 15,241.19

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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.