Home / 18,870.36-25,981.62-17,120.76

Finding the Fourth Proportional to 18,870.36, 25,981.62 and 17,120.76

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Solution

The fourth proportional to 18,870.36, 25,981.62 and 17,120.76 is: 23,572.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.36 : 25,981.62 = 17,120.76 : x
  2. Step 2: Convert to fraction form
    18,870.36/25,981.62 = 17,120.76/x
  3. Step 3: Cross multiply
    18,870.36x = 25,981.62 × 17,120.76
  4. Step 4: Simplify right side
    18,870.36x = 444,825,080.43
  5. Step 5: Solve for x
    x = 444,825,080.43/18,870.36
  6. Step 6: Final answer
    x = 23,572.69

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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.