Home / 15,377.60-21,222.38-8,664.55

Finding the Fourth Proportional to 15,377.60, 21,222.38 and 8,664.55

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Solution

The fourth proportional to 15,377.60, 21,222.38 and 8,664.55 is: 11,957.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,377.60 : 21,222.38 = 8,664.55 : x
  2. Step 2: Convert to fraction form
    15,377.60/21,222.38 = 8,664.55/x
  3. Step 3: Cross multiply
    15,377.60x = 21,222.38 × 8,664.55
  4. Step 4: Simplify right side
    15,377.60x = 183,882,372.63
  5. Step 5: Solve for x
    x = 183,882,372.63/15,377.60
  6. Step 6: Final answer
    x = 11,957.81

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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.