Home / 20,470.08-30,701.69-5,680.50

Finding the Fourth Proportional to 20,470.08, 30,701.69 and 5,680.50

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Solution

The fourth proportional to 20,470.08, 30,701.69 and 5,680.50 is: 8,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.08 : 30,701.69 = 5,680.50 : x
  2. Step 2: Convert to fraction form
    20,470.08/30,701.69 = 5,680.50/x
  3. Step 3: Cross multiply
    20,470.08x = 30,701.69 × 5,680.50
  4. Step 4: Simplify right side
    20,470.08x = 174,400,950.05
  5. Step 5: Solve for x
    x = 174,400,950.05/20,470.08
  6. Step 6: Final answer
    x = 8,519.80

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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.