Home / 20,774.58-28,669.52-11,343.76

Finding the Fourth Proportional to 20,774.58, 28,669.52 and 11,343.76

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Solution

The fourth proportional to 20,774.58, 28,669.52 and 11,343.76 is: 15,654.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.58 : 28,669.52 = 11,343.76 : x
  2. Step 2: Convert to fraction form
    20,774.58/28,669.52 = 11,343.76/x
  3. Step 3: Cross multiply
    20,774.58x = 28,669.52 × 11,343.76
  4. Step 4: Simplify right side
    20,774.58x = 325,220,154.20
  5. Step 5: Solve for x
    x = 325,220,154.20/20,774.58
  6. Step 6: Final answer
    x = 15,654.72

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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.