Home / 19,783.38-27,301.10-10,831.43

Finding the Fourth Proportional to 19,783.38, 27,301.10 and 10,831.43

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Solution

The fourth proportional to 19,783.38, 27,301.10 and 10,831.43 is: 14,947.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,783.38 : 27,301.10 = 10,831.43 : x
  2. Step 2: Convert to fraction form
    19,783.38/27,301.10 = 10,831.43/x
  3. Step 3: Cross multiply
    19,783.38x = 27,301.10 × 10,831.43
  4. Step 4: Simplify right side
    19,783.38x = 295,709,953.57
  5. Step 5: Solve for x
    x = 295,709,953.57/19,783.38
  6. Step 6: Final answer
    x = 14,947.39

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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.