Home / 13,279.14-19,919.61-4,959

Finding the Fourth Proportional to 13,279.14, 19,919.61 and 4,959

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Solution

The fourth proportional to 13,279.14, 19,919.61 and 4,959 is: 7,438.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.14 : 19,919.61 = 4,959 : x
  2. Step 2: Convert to fraction form
    13,279.14/19,919.61 = 4,959/x
  3. Step 3: Cross multiply
    13,279.14x = 19,919.61 × 4,959
  4. Step 4: Simplify right side
    13,279.14x = 98,781,345.99
  5. Step 5: Solve for x
    x = 98,781,345.99/13,279.14
  6. Step 6: Final answer
    x = 7,438.84

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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.