Home / 13,511.16-20,273.88-9,587.78

Finding the Fourth Proportional to 13,511.16, 20,273.88 and 9,587.78

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Solution

The fourth proportional to 13,511.16, 20,273.88 and 9,587.78 is: 14,386.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.16 : 20,273.88 = 9,587.78 : x
  2. Step 2: Convert to fraction form
    13,511.16/20,273.88 = 9,587.78/x
  3. Step 3: Cross multiply
    13,511.16x = 20,273.88 × 9,587.78
  4. Step 4: Simplify right side
    13,511.16x = 194,381,399.82
  5. Step 5: Solve for x
    x = 194,381,399.82/13,511.16
  6. Step 6: Final answer
    x = 14,386.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.