Home / 19,923.18-29,880.69-7,440.90

Finding the Fourth Proportional to 19,923.18, 29,880.69 and 7,440.90

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Solution

The fourth proportional to 19,923.18, 29,880.69 and 7,440.90 is: 11,159.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,923.18 : 29,880.69 = 7,440.90 : x
  2. Step 2: Convert to fraction form
    19,923.18/29,880.69 = 7,440.90/x
  3. Step 3: Cross multiply
    19,923.18x = 29,880.69 × 7,440.90
  4. Step 4: Simplify right side
    19,923.18x = 222,339,226.22
  5. Step 5: Solve for x
    x = 222,339,226.22/19,923.18
  6. Step 6: Final answer
    x = 11,159.83

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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.