Home / 19,910.79-29,839.62-7,418.23

Finding the Fourth Proportional to 19,910.79, 29,839.62 and 7,418.23

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Solution

The fourth proportional to 19,910.79, 29,839.62 and 7,418.23 is: 11,117.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,910.79 : 29,839.62 = 7,418.23 : x
  2. Step 2: Convert to fraction form
    19,910.79/29,839.62 = 7,418.23/x
  3. Step 3: Cross multiply
    19,910.79x = 29,839.62 × 7,418.23
  4. Step 4: Simplify right side
    19,910.79x = 221,357,222.75
  5. Step 5: Solve for x
    x = 221,357,222.75/19,910.79
  6. Step 6: Final answer
    x = 11,117.45

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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.