Home / 22,987.92-31,650-19,617.21

Finding the Fourth Proportional to 22,987.92, 31,650 and 19,617.21

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Solution

The fourth proportional to 22,987.92, 31,650 and 19,617.21 is: 27,009.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,987.92 : 31,650 = 19,617.21 : x
  2. Step 2: Convert to fraction form
    22,987.92/31,650 = 19,617.21/x
  3. Step 3: Cross multiply
    22,987.92x = 31,650 × 19,617.21
  4. Step 4: Simplify right side
    22,987.92x = 620,884,696.50
  5. Step 5: Solve for x
    x = 620,884,696.50/22,987.92
  6. Step 6: Final answer
    x = 27,009.17

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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.