Home / 12,130.79-18,187.18-3,806.06

Finding the Fourth Proportional to 12,130.79, 18,187.18 and 3,806.06

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Solution

The fourth proportional to 12,130.79, 18,187.18 and 3,806.06 is: 5,706.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.79 : 18,187.18 = 3,806.06 : x
  2. Step 2: Convert to fraction form
    12,130.79/18,187.18 = 3,806.06/x
  3. Step 3: Cross multiply
    12,130.79x = 18,187.18 × 3,806.06
  4. Step 4: Simplify right side
    12,130.79x = 69,221,572.72
  5. Step 5: Solve for x
    x = 69,221,572.72/12,130.79
  6. Step 6: Final answer
    x = 5,706.27

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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.