Home / 20,293.50-30,436.20-7,146.39

Finding the Fourth Proportional to 20,293.50, 30,436.20 and 7,146.39

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Solution

The fourth proportional to 20,293.50, 30,436.20 and 7,146.39 is: 10,718.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.50 : 30,436.20 = 7,146.39 : x
  2. Step 2: Convert to fraction form
    20,293.50/30,436.20 = 7,146.39/x
  3. Step 3: Cross multiply
    20,293.50x = 30,436.20 × 7,146.39
  4. Step 4: Simplify right side
    20,293.50x = 217,508,955.32
  5. Step 5: Solve for x
    x = 217,508,955.32/20,293.50
  6. Step 6: Final answer
    x = 10,718.16

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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.