Home / 28,200.96-38,918.88-15,625.44

Finding the Fourth Proportional to 28,200.96, 38,918.88 and 15,625.44

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Solution

The fourth proportional to 28,200.96, 38,918.88 and 15,625.44 is: 21,563.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.96 : 38,918.88 = 15,625.44 : x
  2. Step 2: Convert to fraction form
    28,200.96/38,918.88 = 15,625.44/x
  3. Step 3: Cross multiply
    28,200.96x = 38,918.88 × 15,625.44
  4. Step 4: Simplify right side
    28,200.96x = 608,124,624.31
  5. Step 5: Solve for x
    x = 608,124,624.31/28,200.96
  6. Step 6: Final answer
    x = 21,563.97

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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.