Home / 14,141.12-21,209.40-4,278.68

Finding the Fourth Proportional to 14,141.12, 21,209.40 and 4,278.68

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Solution

The fourth proportional to 14,141.12, 21,209.40 and 4,278.68 is: 6,417.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,141.12 : 21,209.40 = 4,278.68 : x
  2. Step 2: Convert to fraction form
    14,141.12/21,209.40 = 4,278.68/x
  3. Step 3: Cross multiply
    14,141.12x = 21,209.40 × 4,278.68
  4. Step 4: Simplify right side
    14,141.12x = 90,748,235.59
  5. Step 5: Solve for x
    x = 90,748,235.59/14,141.12
  6. Step 6: Final answer
    x = 6,417.33

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Similar ratio
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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.