Home / 27,856.92-38,442.54-15,281.64

Finding the Fourth Proportional to 27,856.92, 38,442.54 and 15,281.64

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Solution

The fourth proportional to 27,856.92, 38,442.54 and 15,281.64 is: 21,088.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,856.92 : 38,442.54 = 15,281.64 : x
  2. Step 2: Convert to fraction form
    27,856.92/38,442.54 = 15,281.64/x
  3. Step 3: Cross multiply
    27,856.92x = 38,442.54 × 15,281.64
  4. Step 4: Simplify right side
    27,856.92x = 587,465,056.97
  5. Step 5: Solve for x
    x = 587,465,056.97/27,856.92
  6. Step 6: Final answer
    x = 21,088.66

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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.