Home / 19,945.09-27,523.15-10,990.81

Finding the Fourth Proportional to 19,945.09, 27,523.15 and 10,990.81

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Solution

The fourth proportional to 19,945.09, 27,523.15 and 10,990.81 is: 15,166.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,945.09 : 27,523.15 = 10,990.81 : x
  2. Step 2: Convert to fraction form
    19,945.09/27,523.15 = 10,990.81/x
  3. Step 3: Cross multiply
    19,945.09x = 27,523.15 × 10,990.81
  4. Step 4: Simplify right side
    19,945.09x = 302,501,712.25
  5. Step 5: Solve for x
    x = 302,501,712.25/19,945.09
  6. Step 6: Final answer
    x = 15,166.73

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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.