Home / 18,945-26,144.28-10,561.68

Finding the Fourth Proportional to 18,945, 26,144.28 and 10,561.68

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Solution

The fourth proportional to 18,945, 26,144.28 and 10,561.68 is: 14,575.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945 : 26,144.28 = 10,561.68 : x
  2. Step 2: Convert to fraction form
    18,945/26,144.28 = 10,561.68/x
  3. Step 3: Cross multiply
    18,945x = 26,144.28 × 10,561.68
  4. Step 4: Simplify right side
    18,945x = 276,127,519.19
  5. Step 5: Solve for x
    x = 276,127,519.19/18,945
  6. Step 6: Final answer
    x = 14,575.22

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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.