Home / 20,255.29-27,947.80-11,752.47

Finding the Fourth Proportional to 20,255.29, 27,947.80 and 11,752.47

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Solution

The fourth proportional to 20,255.29, 27,947.80 and 11,752.47 is: 16,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.29 : 27,947.80 = 11,752.47 : x
  2. Step 2: Convert to fraction form
    20,255.29/27,947.80 = 11,752.47/x
  3. Step 3: Cross multiply
    20,255.29x = 27,947.80 × 11,752.47
  4. Step 4: Simplify right side
    20,255.29x = 328,455,681.07
  5. Step 5: Solve for x
    x = 328,455,681.07/20,255.29
  6. Step 6: Final answer
    x = 16,215.80

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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.