Home / 11,384.20-15,699.95-7,135.69

Finding the Fourth Proportional to 11,384.20, 15,699.95 and 7,135.69

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Solution

The fourth proportional to 11,384.20, 15,699.95 and 7,135.69 is: 9,840.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,384.20 : 15,699.95 = 7,135.69 : x
  2. Step 2: Convert to fraction form
    11,384.20/15,699.95 = 7,135.69/x
  3. Step 3: Cross multiply
    11,384.20x = 15,699.95 × 7,135.69
  4. Step 4: Simplify right side
    11,384.20x = 112,029,954.80
  5. Step 5: Solve for x
    x = 112,029,954.80/11,384.20
  6. Step 6: Final answer
    x = 9,840.83

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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.