Home / 28,404.66-39,196.76-15,659.58

Finding the Fourth Proportional to 28,404.66, 39,196.76 and 15,659.58

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Solution

The fourth proportional to 28,404.66, 39,196.76 and 15,659.58 is: 21,609.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404.66 : 39,196.76 = 15,659.58 : x
  2. Step 2: Convert to fraction form
    28,404.66/39,196.76 = 15,659.58/x
  3. Step 3: Cross multiply
    28,404.66x = 39,196.76 × 15,659.58
  4. Step 4: Simplify right side
    28,404.66x = 613,804,798.96
  5. Step 5: Solve for x
    x = 613,804,798.96/28,404.66
  6. Step 6: Final answer
    x = 21,609.30

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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.