Home / 27,964.79-38,582.72-15,863.28

Finding the Fourth Proportional to 27,964.79, 38,582.72 and 15,863.28

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Solution

The fourth proportional to 27,964.79, 38,582.72 and 15,863.28 is: 21,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,964.79 : 38,582.72 = 15,863.28 : x
  2. Step 2: Convert to fraction form
    27,964.79/38,582.72 = 15,863.28/x
  3. Step 3: Cross multiply
    27,964.79x = 38,582.72 × 15,863.28
  4. Step 4: Simplify right side
    27,964.79x = 612,048,490.52
  5. Step 5: Solve for x
    x = 612,048,490.52/27,964.79
  6. Step 6: Final answer
    x = 21,886.40

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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.