Home / 20,294.58-28,012.05-11,913.78

Finding the Fourth Proportional to 20,294.58, 28,012.05 and 11,913.78

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Solution

The fourth proportional to 20,294.58, 28,012.05 and 11,913.78 is: 16,444.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,294.58 : 28,012.05 = 11,913.78 : x
  2. Step 2: Convert to fraction form
    20,294.58/28,012.05 = 11,913.78/x
  3. Step 3: Cross multiply
    20,294.58x = 28,012.05 × 11,913.78
  4. Step 4: Simplify right side
    20,294.58x = 333,729,401.05
  5. Step 5: Solve for x
    x = 333,729,401.05/20,294.58
  6. Step 6: Final answer
    x = 16,444.26

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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.