Home / 27,894.78-38,494.44-15,318.72

Finding the Fourth Proportional to 27,894.78, 38,494.44 and 15,318.72

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Solution

The fourth proportional to 27,894.78, 38,494.44 and 15,318.72 is: 21,139.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,894.78 : 38,494.44 = 15,318.72 : x
  2. Step 2: Convert to fraction form
    27,894.78/38,494.44 = 15,318.72/x
  3. Step 3: Cross multiply
    27,894.78x = 38,494.44 × 15,318.72
  4. Step 4: Simplify right side
    27,894.78x = 589,685,547.92
  5. Step 5: Solve for x
    x = 589,685,547.92/27,894.78
  6. Step 6: Final answer
    x = 21,139.64

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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.