Home / 27,961.86-38,587.08-15,864.57

Finding the Fourth Proportional to 27,961.86, 38,587.08 and 15,864.57

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Solution

The fourth proportional to 27,961.86, 38,587.08 and 15,864.57 is: 21,892.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,961.86 : 38,587.08 = 15,864.57 : x
  2. Step 2: Convert to fraction form
    27,961.86/38,587.08 = 15,864.57/x
  3. Step 3: Cross multiply
    27,961.86x = 38,587.08 × 15,864.57
  4. Step 4: Simplify right side
    27,961.86x = 612,167,431.76
  5. Step 5: Solve for x
    x = 612,167,431.76/27,961.86
  6. Step 6: Final answer
    x = 21,892.94

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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.