Home / 27,631.16-38,129.70-15,055.64

Finding the Fourth Proportional to 27,631.16, 38,129.70 and 15,055.64

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Solution

The fourth proportional to 27,631.16, 38,129.70 and 15,055.64 is: 20,776.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,631.16 : 38,129.70 = 15,055.64 : x
  2. Step 2: Convert to fraction form
    27,631.16/38,129.70 = 15,055.64/x
  3. Step 3: Cross multiply
    27,631.16x = 38,129.70 × 15,055.64
  4. Step 4: Simplify right side
    27,631.16x = 574,067,036.51
  5. Step 5: Solve for x
    x = 574,067,036.51/27,631.16
  6. Step 6: Final answer
    x = 20,776.07

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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.