Home / 18,639.50-25,721.74-10,141.66

Finding the Fourth Proportional to 18,639.50, 25,721.74 and 10,141.66

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Solution

The fourth proportional to 18,639.50, 25,721.74 and 10,141.66 is: 13,995.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.50 : 25,721.74 = 10,141.66 : x
  2. Step 2: Convert to fraction form
    18,639.50/25,721.74 = 10,141.66/x
  3. Step 3: Cross multiply
    18,639.50x = 25,721.74 × 10,141.66
  4. Step 4: Simplify right side
    18,639.50x = 260,861,041.83
  5. Step 5: Solve for x
    x = 260,861,041.83/18,639.50
  6. Step 6: Final answer
    x = 13,995.07

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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.