Home / 21,248.64-31,872.96-10,121.58

Finding the Fourth Proportional to 21,248.64, 31,872.96 and 10,121.58

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Solution

The fourth proportional to 21,248.64, 31,872.96 and 10,121.58 is: 15,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.64 : 31,872.96 = 10,121.58 : x
  2. Step 2: Convert to fraction form
    21,248.64/31,872.96 = 10,121.58/x
  3. Step 3: Cross multiply
    21,248.64x = 31,872.96 × 10,121.58
  4. Step 4: Simplify right side
    21,248.64x = 322,604,714.48
  5. Step 5: Solve for x
    x = 322,604,714.48/21,248.64
  6. Step 6: Final answer
    x = 15,182.37

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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.