Home / 22,403.79-30,920.60-13,456.19

Finding the Fourth Proportional to 22,403.79, 30,920.60 and 13,456.19

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Solution

The fourth proportional to 22,403.79, 30,920.60 and 13,456.19 is: 18,571.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,403.79 : 30,920.60 = 13,456.19 : x
  2. Step 2: Convert to fraction form
    22,403.79/30,920.60 = 13,456.19/x
  3. Step 3: Cross multiply
    22,403.79x = 30,920.60 × 13,456.19
  4. Step 4: Simplify right side
    22,403.79x = 416,073,579.46
  5. Step 5: Solve for x
    x = 416,073,579.46/22,403.79
  6. Step 6: Final answer
    x = 18,571.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.