Home / 15,273.55-21,076.34-8,557.88

Finding the Fourth Proportional to 15,273.55, 21,076.34 and 8,557.88

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Solution

The fourth proportional to 15,273.55, 21,076.34 and 8,557.88 is: 11,809.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,273.55 : 21,076.34 = 8,557.88 : x
  2. Step 2: Convert to fraction form
    15,273.55/21,076.34 = 8,557.88/x
  3. Step 3: Cross multiply
    15,273.55x = 21,076.34 × 8,557.88
  4. Step 4: Simplify right side
    15,273.55x = 180,368,743.04
  5. Step 5: Solve for x
    x = 180,368,743.04/15,273.55
  6. Step 6: Final answer
    x = 11,809.22

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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.