Home / 20,829.84-31,230.87-11,474.24

Finding the Fourth Proportional to 20,829.84, 31,230.87 and 11,474.24

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Solution

The fourth proportional to 20,829.84, 31,230.87 and 11,474.24 is: 17,203.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.84 : 31,230.87 = 11,474.24 : x
  2. Step 2: Convert to fraction form
    20,829.84/31,230.87 = 11,474.24/x
  3. Step 3: Cross multiply
    20,829.84x = 31,230.87 × 11,474.24
  4. Step 4: Simplify right side
    20,829.84x = 358,350,341.63
  5. Step 5: Solve for x
    x = 358,350,341.63/20,829.84
  6. Step 6: Final answer
    x = 17,203.70

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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.