Home / 11,478.72-15,841.80-6,764.52

Finding the Fourth Proportional to 11,478.72, 15,841.80 and 6,764.52

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Solution

The fourth proportional to 11,478.72, 15,841.80 and 6,764.52 is: 9,335.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.72 : 15,841.80 = 6,764.52 : x
  2. Step 2: Convert to fraction form
    11,478.72/15,841.80 = 6,764.52/x
  3. Step 3: Cross multiply
    11,478.72x = 15,841.80 × 6,764.52
  4. Step 4: Simplify right side
    11,478.72x = 107,162,172.94
  5. Step 5: Solve for x
    x = 107,162,172.94/11,478.72
  6. Step 6: Final answer
    x = 9,335.72

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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.