Home / 19,781.72-27,298.79-10,829.77

Finding the Fourth Proportional to 19,781.72, 27,298.79 and 10,829.77

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Solution

The fourth proportional to 19,781.72, 27,298.79 and 10,829.77 is: 14,945.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,781.72 : 27,298.79 = 10,829.77 : x
  2. Step 2: Convert to fraction form
    19,781.72/27,298.79 = 10,829.77/x
  3. Step 3: Cross multiply
    19,781.72x = 27,298.79 × 10,829.77
  4. Step 4: Simplify right side
    19,781.72x = 295,639,535.19
  5. Step 5: Solve for x
    x = 295,639,535.19/19,781.72
  6. Step 6: Final answer
    x = 14,945.09

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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.