Home / 18,638.29-25,721.24-10,140.99

Finding the Fourth Proportional to 18,638.29, 25,721.24 and 10,140.99

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Solution

The fourth proportional to 18,638.29, 25,721.24 and 10,140.99 is: 13,994.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.29 : 25,721.24 = 10,140.99 : x
  2. Step 2: Convert to fraction form
    18,638.29/25,721.24 = 10,140.99/x
  3. Step 3: Cross multiply
    18,638.29x = 25,721.24 × 10,140.99
  4. Step 4: Simplify right side
    18,638.29x = 260,838,837.63
  5. Step 5: Solve for x
    x = 260,838,837.63/18,638.29
  6. Step 6: Final answer
    x = 13,994.78

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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.