Home / 13,686.09-20,526.12-3,822.72

Finding the Fourth Proportional to 13,686.09, 20,526.12 and 3,822.72

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Solution

The fourth proportional to 13,686.09, 20,526.12 and 3,822.72 is: 5,733.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.09 : 20,526.12 = 3,822.72 : x
  2. Step 2: Convert to fraction form
    13,686.09/20,526.12 = 3,822.72/x
  3. Step 3: Cross multiply
    13,686.09x = 20,526.12 × 3,822.72
  4. Step 4: Simplify right side
    13,686.09x = 78,465,609.45
  5. Step 5: Solve for x
    x = 78,465,609.45/13,686.09
  6. Step 6: Final answer
    x = 5,733.24

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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.