Home / 11,902.20-16,415.50-7,417.40

Finding the Fourth Proportional to 11,902.20, 16,415.50 and 7,417.40

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Solution

The fourth proportional to 11,902.20, 16,415.50 and 7,417.40 is: 10,230.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,902.20 : 16,415.50 = 7,417.40 : x
  2. Step 2: Convert to fraction form
    11,902.20/16,415.50 = 7,417.40/x
  3. Step 3: Cross multiply
    11,902.20x = 16,415.50 × 7,417.40
  4. Step 4: Simplify right side
    11,902.20x = 121,760,329.70
  5. Step 5: Solve for x
    x = 121,760,329.70/11,902.20
  6. Step 6: Final answer
    x = 10,230.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.