Home / 27,638.16-38,139.36-15,062.64

Finding the Fourth Proportional to 27,638.16, 38,139.36 and 15,062.64

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Solution

The fourth proportional to 27,638.16, 38,139.36 and 15,062.64 is: 20,785.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.16 : 38,139.36 = 15,062.64 : x
  2. Step 2: Convert to fraction form
    27,638.16/38,139.36 = 15,062.64/x
  3. Step 3: Cross multiply
    27,638.16x = 38,139.36 × 15,062.64
  4. Step 4: Simplify right side
    27,638.16x = 574,479,449.51
  5. Step 5: Solve for x
    x = 574,479,449.51/27,638.16
  6. Step 6: Final answer
    x = 20,785.73

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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.