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Finding the Fourth Proportional to 17,378.92, 23,983.05 and 9,421.15

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Solution

The fourth proportional to 17,378.92, 23,983.05 and 9,421.15 is: 13,001.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,378.92 : 23,983.05 = 9,421.15 : x
  2. Step 2: Convert to fraction form
    17,378.92/23,983.05 = 9,421.15/x
  3. Step 3: Cross multiply
    17,378.92x = 23,983.05 × 9,421.15
  4. Step 4: Simplify right side
    17,378.92x = 225,947,911.51
  5. Step 5: Solve for x
    x = 225,947,911.51/17,378.92
  6. Step 6: Final answer
    x = 13,001.26

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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.