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Finding the Fourth Proportional to 19,888.23, 29,824.54 and 7,401.43

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Solution

The fourth proportional to 19,888.23, 29,824.54 and 7,401.43 is: 11,099.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.23 : 29,824.54 = 7,401.43 : x
  2. Step 2: Convert to fraction form
    19,888.23/29,824.54 = 7,401.43/x
  3. Step 3: Cross multiply
    19,888.23x = 29,824.54 × 7,401.43
  4. Step 4: Simplify right side
    19,888.23x = 220,744,096.11
  5. Step 5: Solve for x
    x = 220,744,096.11/19,888.23
  6. Step 6: Final answer
    x = 11,099.23

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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.