Home / 21,178.58-31,769.01-5,595.78

Finding the Fourth Proportional to 21,178.58, 31,769.01 and 5,595.78

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Solution

The fourth proportional to 21,178.58, 31,769.01 and 5,595.78 is: 8,393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.58 : 31,769.01 = 5,595.78 : x
  2. Step 2: Convert to fraction form
    21,178.58/31,769.01 = 5,595.78/x
  3. Step 3: Cross multiply
    21,178.58x = 31,769.01 × 5,595.78
  4. Step 4: Simplify right side
    21,178.58x = 177,772,390.78
  5. Step 5: Solve for x
    x = 177,772,390.78/21,178.58
  6. Step 6: Final answer
    x = 8,393.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.