Home / 20,205.59-30,312.23-7,724.58

Finding the Fourth Proportional to 20,205.59, 30,312.23 and 7,724.58

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Solution

The fourth proportional to 20,205.59, 30,312.23 and 7,724.58 is: 11,588.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.59 : 30,312.23 = 7,724.58 : x
  2. Step 2: Convert to fraction form
    20,205.59/30,312.23 = 7,724.58/x
  3. Step 3: Cross multiply
    20,205.59x = 30,312.23 × 7,724.58
  4. Step 4: Simplify right side
    20,205.59x = 234,149,206.99
  5. Step 5: Solve for x
    x = 234,149,206.99/20,205.59
  6. Step 6: Final answer
    x = 11,588.34

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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.