Home / 27,648.86-38,156.44-15,714.20

Finding the Fourth Proportional to 27,648.86, 38,156.44 and 15,714.20

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Solution

The fourth proportional to 27,648.86, 38,156.44 and 15,714.20 is: 21,686.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,648.86 : 38,156.44 = 15,714.20 : x
  2. Step 2: Convert to fraction form
    27,648.86/38,156.44 = 15,714.20/x
  3. Step 3: Cross multiply
    27,648.86x = 38,156.44 × 15,714.20
  4. Step 4: Simplify right side
    27,648.86x = 599,597,929.45
  5. Step 5: Solve for x
    x = 599,597,929.45/27,648.86
  6. Step 6: Final answer
    x = 21,686.17

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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.