Home / 20,320.87-30,482.32-6,470.95

Finding the Fourth Proportional to 20,320.87, 30,482.32 and 6,470.95

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Solution

The fourth proportional to 20,320.87, 30,482.32 and 6,470.95 is: 9,706.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.87 : 30,482.32 = 6,470.95 : x
  2. Step 2: Convert to fraction form
    20,320.87/30,482.32 = 6,470.95/x
  3. Step 3: Cross multiply
    20,320.87x = 30,482.32 × 6,470.95
  4. Step 4: Simplify right side
    20,320.87x = 197,249,568.60
  5. Step 5: Solve for x
    x = 197,249,568.60/20,320.87
  6. Step 6: Final answer
    x = 9,706.75

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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.