Home / 20,208.47-30,325.01-8,521.70

Finding the Fourth Proportional to 20,208.47, 30,325.01 and 8,521.70

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Solution

The fourth proportional to 20,208.47, 30,325.01 and 8,521.70 is: 12,787.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.47 : 30,325.01 = 8,521.70 : x
  2. Step 2: Convert to fraction form
    20,208.47/30,325.01 = 8,521.70/x
  3. Step 3: Cross multiply
    20,208.47x = 30,325.01 × 8,521.70
  4. Step 4: Simplify right side
    20,208.47x = 258,420,443.48
  5. Step 5: Solve for x
    x = 258,420,443.48/20,208.47
  6. Step 6: Final answer
    x = 12,787.73

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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.