Home / 10,218.09-15,319.36-5,284.58

Finding the Fourth Proportional to 10,218.09, 15,319.36 and 5,284.58

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Solution

The fourth proportional to 10,218.09, 15,319.36 and 5,284.58 is: 7,922.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.09 : 15,319.36 = 5,284.58 : x
  2. Step 2: Convert to fraction form
    10,218.09/15,319.36 = 5,284.58/x
  3. Step 3: Cross multiply
    10,218.09x = 15,319.36 × 5,284.58
  4. Step 4: Simplify right side
    10,218.09x = 80,956,383.47
  5. Step 5: Solve for x
    x = 80,956,383.47/10,218.09
  6. Step 6: Final answer
    x = 7,922.85

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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.