Home / 19,389.62-26,755.78-10,889.81

Finding the Fourth Proportional to 19,389.62, 26,755.78 and 10,889.81

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Solution

The fourth proportional to 19,389.62, 26,755.78 and 10,889.81 is: 15,026.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,389.62 : 26,755.78 = 10,889.81 : x
  2. Step 2: Convert to fraction form
    19,389.62/26,755.78 = 10,889.81/x
  3. Step 3: Cross multiply
    19,389.62x = 26,755.78 × 10,889.81
  4. Step 4: Simplify right side
    19,389.62x = 291,365,400.27
  5. Step 5: Solve for x
    x = 291,365,400.27/19,389.62
  6. Step 6: Final answer
    x = 15,026.88

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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.