Home / 20,267.54-30,405.38-7,118.18

Finding the Fourth Proportional to 20,267.54, 30,405.38 and 7,118.18

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Solution

The fourth proportional to 20,267.54, 30,405.38 and 7,118.18 is: 10,678.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.54 : 30,405.38 = 7,118.18 : x
  2. Step 2: Convert to fraction form
    20,267.54/30,405.38 = 7,118.18/x
  3. Step 3: Cross multiply
    20,267.54x = 30,405.38 × 7,118.18
  4. Step 4: Simplify right side
    20,267.54x = 216,430,780.19
  5. Step 5: Solve for x
    x = 216,430,780.19/20,267.54
  6. Step 6: Final answer
    x = 10,678.69

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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.