Home / 19,944.09-27,521.78-10,989.81

Finding the Fourth Proportional to 19,944.09, 27,521.78 and 10,989.81

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Solution

The fourth proportional to 19,944.09, 27,521.78 and 10,989.81 is: 15,165.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,944.09 : 27,521.78 = 10,989.81 : x
  2. Step 2: Convert to fraction form
    19,944.09/27,521.78 = 10,989.81/x
  3. Step 3: Cross multiply
    19,944.09x = 27,521.78 × 10,989.81
  4. Step 4: Simplify right side
    19,944.09x = 302,459,078.11
  5. Step 5: Solve for x
    x = 302,459,078.11/19,944.09
  6. Step 6: Final answer
    x = 15,165.35

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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.