Home / 13,406.08-20,109.18-3,545.26

Finding the Fourth Proportional to 13,406.08, 20,109.18 and 3,545.26

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Solution

The fourth proportional to 13,406.08, 20,109.18 and 3,545.26 is: 5,317.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.08 : 20,109.18 = 3,545.26 : x
  2. Step 2: Convert to fraction form
    13,406.08/20,109.18 = 3,545.26/x
  3. Step 3: Cross multiply
    13,406.08x = 20,109.18 × 3,545.26
  4. Step 4: Simplify right side
    13,406.08x = 71,292,271.49
  5. Step 5: Solve for x
    x = 71,292,271.49/13,406.08
  6. Step 6: Final answer
    x = 5,317.91

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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.