Home / 11,203.68-16,808.40-4,278.72

Finding the Fourth Proportional to 11,203.68, 16,808.40 and 4,278.72

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Solution

The fourth proportional to 11,203.68, 16,808.40 and 4,278.72 is: 6,419.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,203.68 : 16,808.40 = 4,278.72 : x
  2. Step 2: Convert to fraction form
    11,203.68/16,808.40 = 4,278.72/x
  3. Step 3: Cross multiply
    11,203.68x = 16,808.40 × 4,278.72
  4. Step 4: Simplify right side
    11,203.68x = 71,918,437.25
  5. Step 5: Solve for x
    x = 71,918,437.25/11,203.68
  6. Step 6: Final answer
    x = 6,419.18

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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.