Home / 15,371.36-21,212.60-8,655.68

Finding the Fourth Proportional to 15,371.36, 21,212.60 and 8,655.68

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Solution

The fourth proportional to 15,371.36, 21,212.60 and 8,655.68 is: 11,944.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.36 : 21,212.60 = 8,655.68 : x
  2. Step 2: Convert to fraction form
    15,371.36/21,212.60 = 8,655.68/x
  3. Step 3: Cross multiply
    15,371.36x = 21,212.60 × 8,655.68
  4. Step 4: Simplify right side
    15,371.36x = 183,609,477.57
  5. Step 5: Solve for x
    x = 183,609,477.57/15,371.36
  6. Step 6: Final answer
    x = 11,944.91

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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.