Home / 19,993.47-29,981.43-10,631.22

Finding the Fourth Proportional to 19,993.47, 29,981.43 and 10,631.22

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Solution

The fourth proportional to 19,993.47, 29,981.43 and 10,631.22 is: 15,942.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.47 : 29,981.43 = 10,631.22 : x
  2. Step 2: Convert to fraction form
    19,993.47/29,981.43 = 10,631.22/x
  3. Step 3: Cross multiply
    19,993.47x = 29,981.43 × 10,631.22
  4. Step 4: Simplify right side
    19,993.47x = 318,739,178.24
  5. Step 5: Solve for x
    x = 318,739,178.24/19,993.47
  6. Step 6: Final answer
    x = 15,942.16

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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.