Home / 20,673.67-28,543.05-13,027.98

Finding the Fourth Proportional to 20,673.67, 28,543.05 and 13,027.98

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Solution

The fourth proportional to 20,673.67, 28,543.05 and 13,027.98 is: 17,987.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.67 : 28,543.05 = 13,027.98 : x
  2. Step 2: Convert to fraction form
    20,673.67/28,543.05 = 13,027.98/x
  3. Step 3: Cross multiply
    20,673.67x = 28,543.05 × 13,027.98
  4. Step 4: Simplify right side
    20,673.67x = 371,858,284.54
  5. Step 5: Solve for x
    x = 371,858,284.54/20,673.67
  6. Step 6: Final answer
    x = 17,987.05

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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.