Home / 28,196.64-38,909.68-15,620.48

Finding the Fourth Proportional to 28,196.64, 38,909.68 and 15,620.48

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Solution

The fourth proportional to 28,196.64, 38,909.68 and 15,620.48 is: 21,555.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,196.64 : 38,909.68 = 15,620.48 : x
  2. Step 2: Convert to fraction form
    28,196.64/38,909.68 = 15,620.48/x
  3. Step 3: Cross multiply
    28,196.64x = 38,909.68 × 15,620.48
  4. Step 4: Simplify right side
    28,196.64x = 607,787,878.25
  5. Step 5: Solve for x
    x = 607,787,878.25/28,196.64
  6. Step 6: Final answer
    x = 21,555.33

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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.