Home / 15,743.60-21,725.50-8,669.86

Finding the Fourth Proportional to 15,743.60, 21,725.50 and 8,669.86

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Solution

The fourth proportional to 15,743.60, 21,725.50 and 8,669.86 is: 11,964.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.60 : 21,725.50 = 8,669.86 : x
  2. Step 2: Convert to fraction form
    15,743.60/21,725.50 = 8,669.86/x
  3. Step 3: Cross multiply
    15,743.60x = 21,725.50 × 8,669.86
  4. Step 4: Simplify right side
    15,743.60x = 188,357,043.43
  5. Step 5: Solve for x
    x = 188,357,043.43/15,743.60
  6. Step 6: Final answer
    x = 11,964.04

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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.