Home / 20,429.58-30,584.88-15,187.80

Finding the Fourth Proportional to 20,429.58, 30,584.88 and 15,187.80

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Solution

The fourth proportional to 20,429.58, 30,584.88 and 15,187.80 is: 22,737.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.58 : 30,584.88 = 15,187.80 : x
  2. Step 2: Convert to fraction form
    20,429.58/30,584.88 = 15,187.80/x
  3. Step 3: Cross multiply
    20,429.58x = 30,584.88 × 15,187.80
  4. Step 4: Simplify right side
    20,429.58x = 464,517,040.46
  5. Step 5: Solve for x
    x = 464,517,040.46/20,429.58
  6. Step 6: Final answer
    x = 22,737.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.