Home / 20,346.99-28,079.85-11,394.51

Finding the Fourth Proportional to 20,346.99, 28,079.85 and 11,394.51

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Solution

The fourth proportional to 20,346.99, 28,079.85 and 11,394.51 is: 15,724.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.99 : 28,079.85 = 11,394.51 : x
  2. Step 2: Convert to fraction form
    20,346.99/28,079.85 = 11,394.51/x
  3. Step 3: Cross multiply
    20,346.99x = 28,079.85 × 11,394.51
  4. Step 4: Simplify right side
    20,346.99x = 319,956,131.62
  5. Step 5: Solve for x
    x = 319,956,131.62/20,346.99
  6. Step 6: Final answer
    x = 15,724.99

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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.