Home / 18,638.64-25,721.48-10,140.93

Finding the Fourth Proportional to 18,638.64, 25,721.48 and 10,140.93

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Solution

The fourth proportional to 18,638.64, 25,721.48 and 10,140.93 is: 13,994.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.64 : 25,721.48 = 10,140.93 : x
  2. Step 2: Convert to fraction form
    18,638.64/25,721.48 = 10,140.93/x
  3. Step 3: Cross multiply
    18,638.64x = 25,721.48 × 10,140.93
  4. Step 4: Simplify right side
    18,638.64x = 260,839,753.53
  5. Step 5: Solve for x
    x = 260,839,753.53/18,638.64
  6. Step 6: Final answer
    x = 13,994.57

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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.