Home / 20,824.19-28,737.80-11,392.95

Finding the Fourth Proportional to 20,824.19, 28,737.80 and 11,392.95

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Solution

The fourth proportional to 20,824.19, 28,737.80 and 11,392.95 is: 15,722.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.19 : 28,737.80 = 11,392.95 : x
  2. Step 2: Convert to fraction form
    20,824.19/28,737.80 = 11,392.95/x
  3. Step 3: Cross multiply
    20,824.19x = 28,737.80 × 11,392.95
  4. Step 4: Simplify right side
    20,824.19x = 327,408,318.51
  5. Step 5: Solve for x
    x = 327,408,318.51/20,824.19
  6. Step 6: Final answer
    x = 15,722.50

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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.