Home / 20,329.35-28,053.50-11,376.87

Finding the Fourth Proportional to 20,329.35, 28,053.50 and 11,376.87

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Solution

The fourth proportional to 20,329.35, 28,053.50 and 11,376.87 is: 15,699.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,329.35 : 28,053.50 = 11,376.87 : x
  2. Step 2: Convert to fraction form
    20,329.35/28,053.50 = 11,376.87/x
  3. Step 3: Cross multiply
    20,329.35x = 28,053.50 × 11,376.87
  4. Step 4: Simplify right side
    20,329.35x = 319,160,965.66
  5. Step 5: Solve for x
    x = 319,160,965.66/20,329.35
  6. Step 6: Final answer
    x = 15,699.52

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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.