Home / 20,882.86-28,818.35-11,322.75

Finding the Fourth Proportional to 20,882.86, 28,818.35 and 11,322.75

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Solution

The fourth proportional to 20,882.86, 28,818.35 and 11,322.75 is: 15,625.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.86 : 28,818.35 = 11,322.75 : x
  2. Step 2: Convert to fraction form
    20,882.86/28,818.35 = 11,322.75/x
  3. Step 3: Cross multiply
    20,882.86x = 28,818.35 × 11,322.75
  4. Step 4: Simplify right side
    20,882.86x = 326,302,972.46
  5. Step 5: Solve for x
    x = 326,302,972.46/20,882.86
  6. Step 6: Final answer
    x = 15,625.40

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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.