Home / 13,722.12-18,929.16-9,736.20

Finding the Fourth Proportional to 13,722.12, 18,929.16 and 9,736.20

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Solution

The fourth proportional to 13,722.12, 18,929.16 and 9,736.20 is: 13,430.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.12 : 18,929.16 = 9,736.20 : x
  2. Step 2: Convert to fraction form
    13,722.12/18,929.16 = 9,736.20/x
  3. Step 3: Cross multiply
    13,722.12x = 18,929.16 × 9,736.20
  4. Step 4: Simplify right side
    13,722.12x = 184,298,087.59
  5. Step 5: Solve for x
    x = 184,298,087.59/13,722.12
  6. Step 6: Final answer
    x = 13,430.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.