Home / 20,259.78-30,403.25-7,112.19

Finding the Fourth Proportional to 20,259.78, 30,403.25 and 7,112.19

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Solution

The fourth proportional to 20,259.78, 30,403.25 and 7,112.19 is: 10,673.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.78 : 30,403.25 = 7,112.19 : x
  2. Step 2: Convert to fraction form
    20,259.78/30,403.25 = 7,112.19/x
  3. Step 3: Cross multiply
    20,259.78x = 30,403.25 × 7,112.19
  4. Step 4: Simplify right side
    20,259.78x = 216,233,655.06
  5. Step 5: Solve for x
    x = 216,233,655.06/20,259.78
  6. Step 6: Final answer
    x = 10,673.05

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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.