Home / 13,730.09-20,600.04-5,405.51

Finding the Fourth Proportional to 13,730.09, 20,600.04 and 5,405.51

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Solution

The fourth proportional to 13,730.09, 20,600.04 and 5,405.51 is: 8,110.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.09 : 20,600.04 = 5,405.51 : x
  2. Step 2: Convert to fraction form
    13,730.09/20,600.04 = 5,405.51/x
  3. Step 3: Cross multiply
    13,730.09x = 20,600.04 × 5,405.51
  4. Step 4: Simplify right side
    13,730.09x = 111,353,722.22
  5. Step 5: Solve for x
    x = 111,353,722.22/13,730.09
  6. Step 6: Final answer
    x = 8,110.20

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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.