Home / 18,707.01-25,792.33-11,981.58

Finding the Fourth Proportional to 18,707.01, 25,792.33 and 11,981.58

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Solution

The fourth proportional to 18,707.01, 25,792.33 and 11,981.58 is: 16,519.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.01 : 25,792.33 = 11,981.58 : x
  2. Step 2: Convert to fraction form
    18,707.01/25,792.33 = 11,981.58/x
  3. Step 3: Cross multiply
    18,707.01x = 25,792.33 × 11,981.58
  4. Step 4: Simplify right side
    18,707.01x = 309,032,865.28
  5. Step 5: Solve for x
    x = 309,032,865.28/18,707.01
  6. Step 6: Final answer
    x = 16,519.63

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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.