Home / 27,981.38-38,587.69-21,597.77

Finding the Fourth Proportional to 27,981.38, 38,587.69 and 21,597.77

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Solution

The fourth proportional to 27,981.38, 38,587.69 and 21,597.77 is: 29,784.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,981.38 : 38,587.69 = 21,597.77 : x
  2. Step 2: Convert to fraction form
    27,981.38/38,587.69 = 21,597.77/x
  3. Step 3: Cross multiply
    27,981.38x = 38,587.69 × 21,597.77
  4. Step 4: Simplify right side
    27,981.38x = 833,408,176.92
  5. Step 5: Solve for x
    x = 833,408,176.92/27,981.38
  6. Step 6: Final answer
    x = 29,784.38

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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.