Home / 28,237.46-38,967.72-15,662.21

Finding the Fourth Proportional to 28,237.46, 38,967.72 and 15,662.21

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Solution

The fourth proportional to 28,237.46, 38,967.72 and 15,662.21 is: 21,613.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.46 : 38,967.72 = 15,662.21 : x
  2. Step 2: Convert to fraction form
    28,237.46/38,967.72 = 15,662.21/x
  3. Step 3: Cross multiply
    28,237.46x = 38,967.72 × 15,662.21
  4. Step 4: Simplify right side
    28,237.46x = 610,320,535.55
  5. Step 5: Solve for x
    x = 610,320,535.55/28,237.46
  6. Step 6: Final answer
    x = 21,613.86

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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.