Home / 10,219.38-15,330.06-3,979.91

Finding the Fourth Proportional to 10,219.38, 15,330.06 and 3,979.91

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Solution

The fourth proportional to 10,219.38, 15,330.06 and 3,979.91 is: 5,970.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,219.38 : 15,330.06 = 3,979.91 : x
  2. Step 2: Convert to fraction form
    10,219.38/15,330.06 = 3,979.91/x
  3. Step 3: Cross multiply
    10,219.38x = 15,330.06 × 3,979.91
  4. Step 4: Simplify right side
    10,219.38x = 61,012,259.09
  5. Step 5: Solve for x
    x = 61,012,259.09/10,219.38
  6. Step 6: Final answer
    x = 5,970.25

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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.