Home / 18,720.09-25,835.09-10,764.81

Finding the Fourth Proportional to 18,720.09, 25,835.09 and 10,764.81

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Solution

The fourth proportional to 18,720.09, 25,835.09 and 10,764.81 is: 14,856.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.09 : 25,835.09 = 10,764.81 : x
  2. Step 2: Convert to fraction form
    18,720.09/25,835.09 = 10,764.81/x
  3. Step 3: Cross multiply
    18,720.09x = 25,835.09 × 10,764.81
  4. Step 4: Simplify right side
    18,720.09x = 278,109,781.36
  5. Step 5: Solve for x
    x = 278,109,781.36/18,720.09
  6. Step 6: Final answer
    x = 14,856.22

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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.