Home / 30,423.78-41,983.84-17,678.03

Finding the Fourth Proportional to 30,423.78, 41,983.84 and 17,678.03

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Solution

The fourth proportional to 30,423.78, 41,983.84 and 17,678.03 is: 24,395.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,423.78 : 41,983.84 = 17,678.03 : x
  2. Step 2: Convert to fraction form
    30,423.78/41,983.84 = 17,678.03/x
  3. Step 3: Cross multiply
    30,423.78x = 41,983.84 × 17,678.03
  4. Step 4: Simplify right side
    30,423.78x = 742,191,583.04
  5. Step 5: Solve for x
    x = 742,191,583.04/30,423.78
  6. Step 6: Final answer
    x = 24,395.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.