Home / 20,346.96-28,079.28-11,394.24

Finding the Fourth Proportional to 20,346.96, 28,079.28 and 11,394.24

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Solution

The fourth proportional to 20,346.96, 28,079.28 and 11,394.24 is: 15,724.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.96 : 28,079.28 = 11,394.24 : x
  2. Step 2: Convert to fraction form
    20,346.96/28,079.28 = 11,394.24/x
  3. Step 3: Cross multiply
    20,346.96x = 28,079.28 × 11,394.24
  4. Step 4: Simplify right side
    20,346.96x = 319,942,055.35
  5. Step 5: Solve for x
    x = 319,942,055.35/20,346.96
  6. Step 6: Final answer
    x = 15,724.32

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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.