Home / 20,421.30-30,632.73-6,382.62

Finding the Fourth Proportional to 20,421.30, 30,632.73 and 6,382.62

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Solution

The fourth proportional to 20,421.30, 30,632.73 and 6,382.62 is: 9,574.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421.30 : 30,632.73 = 6,382.62 : x
  2. Step 2: Convert to fraction form
    20,421.30/30,632.73 = 6,382.62/x
  3. Step 3: Cross multiply
    20,421.30x = 30,632.73 × 6,382.62
  4. Step 4: Simplify right side
    20,421.30x = 195,517,075.15
  5. Step 5: Solve for x
    x = 195,517,075.15/20,421.30
  6. Step 6: Final answer
    x = 9,574.17

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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.