Home / 27,916.51-38,521.55-15,979.13

Finding the Fourth Proportional to 27,916.51, 38,521.55 and 15,979.13

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Solution

The fourth proportional to 27,916.51, 38,521.55 and 15,979.13 is: 22,049.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,916.51 : 38,521.55 = 15,979.13 : x
  2. Step 2: Convert to fraction form
    27,916.51/38,521.55 = 15,979.13/x
  3. Step 3: Cross multiply
    27,916.51x = 38,521.55 × 15,979.13
  4. Step 4: Simplify right side
    27,916.51x = 615,540,775.36
  5. Step 5: Solve for x
    x = 615,540,775.36/27,916.51
  6. Step 6: Final answer
    x = 22,049.35

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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.