Home / 20,205.77-27,895.52-13,502.75

Finding the Fourth Proportional to 20,205.77, 27,895.52 and 13,502.75

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Solution

The fourth proportional to 20,205.77, 27,895.52 and 13,502.75 is: 18,641.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.77 : 27,895.52 = 13,502.75 : x
  2. Step 2: Convert to fraction form
    20,205.77/27,895.52 = 13,502.75/x
  3. Step 3: Cross multiply
    20,205.77x = 27,895.52 × 13,502.75
  4. Step 4: Simplify right side
    20,205.77x = 376,666,126.96
  5. Step 5: Solve for x
    x = 376,666,126.96/20,205.77
  6. Step 6: Final answer
    x = 18,641.52

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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.