Home / 15,619.71-21,532.77-11,135.68

Finding the Fourth Proportional to 15,619.71, 21,532.77 and 11,135.68

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Solution

The fourth proportional to 15,619.71, 21,532.77 and 11,135.68 is: 15,351.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,619.71 : 21,532.77 = 11,135.68 : x
  2. Step 2: Convert to fraction form
    15,619.71/21,532.77 = 11,135.68/x
  3. Step 3: Cross multiply
    15,619.71x = 21,532.77 × 11,135.68
  4. Step 4: Simplify right side
    15,619.71x = 239,781,982.40
  5. Step 5: Solve for x
    x = 239,781,982.40/15,619.71
  6. Step 6: Final answer
    x = 15,351.25

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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.