Home / 27,651.64-38,160.16-15,714.28

Finding the Fourth Proportional to 27,651.64, 38,160.16 and 15,714.28

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Solution

The fourth proportional to 27,651.64, 38,160.16 and 15,714.28 is: 21,686.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,651.64 : 38,160.16 = 15,714.28 : x
  2. Step 2: Convert to fraction form
    27,651.64/38,160.16 = 15,714.28/x
  3. Step 3: Cross multiply
    27,651.64x = 38,160.16 × 15,714.28
  4. Step 4: Simplify right side
    27,651.64x = 599,659,439.08
  5. Step 5: Solve for x
    x = 599,659,439.08/27,651.64
  6. Step 6: Final answer
    x = 21,686.22

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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.