Home / 20,269.51-30,401.70-5,479.45

Finding the Fourth Proportional to 20,269.51, 30,401.70 and 5,479.45

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Solution

The fourth proportional to 20,269.51, 30,401.70 and 5,479.45 is: 8,218.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.51 : 30,401.70 = 5,479.45 : x
  2. Step 2: Convert to fraction form
    20,269.51/30,401.70 = 5,479.45/x
  3. Step 3: Cross multiply
    20,269.51x = 30,401.70 × 5,479.45
  4. Step 4: Simplify right side
    20,269.51x = 166,584,595.07
  5. Step 5: Solve for x
    x = 166,584,595.07/20,269.51
  6. Step 6: Final answer
    x = 8,218.48

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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.