Home / 12,388.05-18,570.70-5,363.66

Finding the Fourth Proportional to 12,388.05, 18,570.70 and 5,363.66

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Solution

The fourth proportional to 12,388.05, 18,570.70 and 5,363.66 is: 8,040.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.05 : 18,570.70 = 5,363.66 : x
  2. Step 2: Convert to fraction form
    12,388.05/18,570.70 = 5,363.66/x
  3. Step 3: Cross multiply
    12,388.05x = 18,570.70 × 5,363.66
  4. Step 4: Simplify right side
    12,388.05x = 99,606,920.76
  5. Step 5: Solve for x
    x = 99,606,920.76/12,388.05
  6. Step 6: Final answer
    x = 8,040.56

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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.