Home / 28,276.59-39,021.70-15,701.34

Finding the Fourth Proportional to 28,276.59, 39,021.70 and 15,701.34

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Solution

The fourth proportional to 28,276.59, 39,021.70 and 15,701.34 is: 21,667.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,276.59 : 39,021.70 = 15,701.34 : x
  2. Step 2: Convert to fraction form
    28,276.59/39,021.70 = 15,701.34/x
  3. Step 3: Cross multiply
    28,276.59x = 39,021.70 × 15,701.34
  4. Step 4: Simplify right side
    28,276.59x = 612,693,115.60
  5. Step 5: Solve for x
    x = 612,693,115.60/28,276.59
  6. Step 6: Final answer
    x = 21,667.85

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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.