Home / 20,829.62-31,230.54-11,474.07

Finding the Fourth Proportional to 20,829.62, 31,230.54 and 11,474.07

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Solution

The fourth proportional to 20,829.62, 31,230.54 and 11,474.07 is: 17,203.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.62 : 31,230.54 = 11,474.07 : x
  2. Step 2: Convert to fraction form
    20,829.62/31,230.54 = 11,474.07/x
  3. Step 3: Cross multiply
    20,829.62x = 31,230.54 × 11,474.07
  4. Step 4: Simplify right side
    20,829.62x = 358,341,402.10
  5. Step 5: Solve for x
    x = 358,341,402.10/20,829.62
  6. Step 6: Final answer
    x = 17,203.46

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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.