Home / 28,185.92-38,887.80-18,756.08

Finding the Fourth Proportional to 28,185.92, 38,887.80 and 18,756.08

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Solution

The fourth proportional to 28,185.92, 38,887.80 and 18,756.08 is: 25,877.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,185.92 : 38,887.80 = 18,756.08 : x
  2. Step 2: Convert to fraction form
    28,185.92/38,887.80 = 18,756.08/x
  3. Step 3: Cross multiply
    28,185.92x = 38,887.80 × 18,756.08
  4. Step 4: Simplify right side
    28,185.92x = 729,382,687.82
  5. Step 5: Solve for x
    x = 729,382,687.82/28,185.92
  6. Step 6: Final answer
    x = 25,877.55

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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.