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Finding the Fourth Proportional to 17,678.01, 24,395.90 and 9,720.21

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Solution

The fourth proportional to 17,678.01, 24,395.90 and 9,720.21 is: 13,414.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,678.01 : 24,395.90 = 9,720.21 : x
  2. Step 2: Convert to fraction form
    17,678.01/24,395.90 = 9,720.21/x
  3. Step 3: Cross multiply
    17,678.01x = 24,395.90 × 9,720.21
  4. Step 4: Simplify right side
    17,678.01x = 237,133,222.54
  5. Step 5: Solve for x
    x = 237,133,222.54/17,678.01
  6. Step 6: Final answer
    x = 13,414.02

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1.5x scale

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.