Home / 12,130.95-18,187.19-3,806.17

Finding the Fourth Proportional to 12,130.95, 18,187.19 and 3,806.17

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Solution

The fourth proportional to 12,130.95, 18,187.19 and 3,806.17 is: 5,706.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.95 : 18,187.19 = 3,806.17 : x
  2. Step 2: Convert to fraction form
    12,130.95/18,187.19 = 3,806.17/x
  3. Step 3: Cross multiply
    12,130.95x = 18,187.19 × 3,806.17
  4. Step 4: Simplify right side
    12,130.95x = 69,223,472.46
  5. Step 5: Solve for x
    x = 69,223,472.46/12,130.95
  6. Step 6: Final answer
    x = 5,706.35

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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.