Home / 20,385.48-30,518.88-11,926.02

Finding the Fourth Proportional to 20,385.48, 30,518.88 and 11,926.02

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Solution

The fourth proportional to 20,385.48, 30,518.88 and 11,926.02 is: 17,854.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385.48 : 30,518.88 = 11,926.02 : x
  2. Step 2: Convert to fraction form
    20,385.48/30,518.88 = 11,926.02/x
  3. Step 3: Cross multiply
    20,385.48x = 30,518.88 × 11,926.02
  4. Step 4: Simplify right side
    20,385.48x = 363,968,773.26
  5. Step 5: Solve for x
    x = 363,968,773.26/20,385.48
  6. Step 6: Final answer
    x = 17,854.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.