Home / 19,917.05-29,880.76-7,437.18

Finding the Fourth Proportional to 19,917.05, 29,880.76 and 7,437.18

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Solution

The fourth proportional to 19,917.05, 29,880.76 and 7,437.18 is: 11,157.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.05 : 29,880.76 = 7,437.18 : x
  2. Step 2: Convert to fraction form
    19,917.05/29,880.76 = 7,437.18/x
  3. Step 3: Cross multiply
    19,917.05x = 29,880.76 × 7,437.18
  4. Step 4: Simplify right side
    19,917.05x = 222,228,590.66
  5. Step 5: Solve for x
    x = 222,228,590.66/19,917.05
  6. Step 6: Final answer
    x = 11,157.71

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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.