Home / 20,356.72-30,532.52-7,205.36

Finding the Fourth Proportional to 20,356.72, 30,532.52 and 7,205.36

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Solution

The fourth proportional to 20,356.72, 30,532.52 and 7,205.36 is: 10,807.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.72 : 30,532.52 = 7,205.36 : x
  2. Step 2: Convert to fraction form
    20,356.72/30,532.52 = 7,205.36/x
  3. Step 3: Cross multiply
    20,356.72x = 30,532.52 × 7,205.36
  4. Step 4: Simplify right side
    20,356.72x = 219,997,798.31
  5. Step 5: Solve for x
    x = 219,997,798.31/20,356.72
  6. Step 6: Final answer
    x = 10,807.13

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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.