Home / 19,819.38-29,710.47-6,662.55

Finding the Fourth Proportional to 19,819.38, 29,710.47 and 6,662.55

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Solution

The fourth proportional to 19,819.38, 29,710.47 and 6,662.55 is: 9,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.38 : 29,710.47 = 6,662.55 : x
  2. Step 2: Convert to fraction form
    19,819.38/29,710.47 = 6,662.55/x
  3. Step 3: Cross multiply
    19,819.38x = 29,710.47 × 6,662.55
  4. Step 4: Simplify right side
    19,819.38x = 197,947,491.90
  5. Step 5: Solve for x
    x = 197,947,491.90/19,819.38
  6. Step 6: Final answer
    x = 9,987.57

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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.