Home / 18,518.55-27,782.15-5,371.17

Finding the Fourth Proportional to 18,518.55, 27,782.15 and 5,371.17

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Solution

The fourth proportional to 18,518.55, 27,782.15 and 5,371.17 is: 8,058.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.55 : 27,782.15 = 5,371.17 : x
  2. Step 2: Convert to fraction form
    18,518.55/27,782.15 = 5,371.17/x
  3. Step 3: Cross multiply
    18,518.55x = 27,782.15 × 5,371.17
  4. Step 4: Simplify right side
    18,518.55x = 149,222,623.76
  5. Step 5: Solve for x
    x = 149,222,623.76/18,518.55
  6. Step 6: Final answer
    x = 8,058.01

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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.