Home / 21,714.84-29,934.30-15,320.58

Finding the Fourth Proportional to 21,714.84, 29,934.30 and 15,320.58

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Solution

The fourth proportional to 21,714.84, 29,934.30 and 15,320.58 is: 21,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,714.84 : 29,934.30 = 15,320.58 : x
  2. Step 2: Convert to fraction form
    21,714.84/29,934.30 = 15,320.58/x
  3. Step 3: Cross multiply
    21,714.84x = 29,934.30 × 15,320.58
  4. Step 4: Simplify right side
    21,714.84x = 458,610,837.89
  5. Step 5: Solve for x
    x = 458,610,837.89/21,714.84
  6. Step 6: Final answer
    x = 21,119.70

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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.