Home / 13,083.99-18,056.06-7,115.68

Finding the Fourth Proportional to 13,083.99, 18,056.06 and 7,115.68

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Solution

The fourth proportional to 13,083.99, 18,056.06 and 7,115.68 is: 9,819.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,083.99 : 18,056.06 = 7,115.68 : x
  2. Step 2: Convert to fraction form
    13,083.99/18,056.06 = 7,115.68/x
  3. Step 3: Cross multiply
    13,083.99x = 18,056.06 × 7,115.68
  4. Step 4: Simplify right side
    13,083.99x = 128,481,145.02
  5. Step 5: Solve for x
    x = 128,481,145.02/13,083.99
  6. Step 6: Final answer
    x = 9,819.72

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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.