Home / 20,948.72-31,415.52-6,153.68

Finding the Fourth Proportional to 20,948.72, 31,415.52 and 6,153.68

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Solution

The fourth proportional to 20,948.72, 31,415.52 and 6,153.68 is: 9,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.72 : 31,415.52 = 6,153.68 : x
  2. Step 2: Convert to fraction form
    20,948.72/31,415.52 = 6,153.68/x
  3. Step 3: Cross multiply
    20,948.72x = 31,415.52 × 6,153.68
  4. Step 4: Simplify right side
    20,948.72x = 193,321,057.11
  5. Step 5: Solve for x
    x = 193,321,057.11/20,948.72
  6. Step 6: Final answer
    x = 9,228.30

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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.