Home / 20,378.46-30,570.54-9,287.94

Finding the Fourth Proportional to 20,378.46, 30,570.54 and 9,287.94

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Solution

The fourth proportional to 20,378.46, 30,570.54 and 9,287.94 is: 13,933.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.46 : 30,570.54 = 9,287.94 : x
  2. Step 2: Convert to fraction form
    20,378.46/30,570.54 = 9,287.94/x
  3. Step 3: Cross multiply
    20,378.46x = 30,570.54 × 9,287.94
  4. Step 4: Simplify right side
    20,378.46x = 283,937,341.29
  5. Step 5: Solve for x
    x = 283,937,341.29/20,378.46
  6. Step 6: Final answer
    x = 13,933.21

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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.