Home / 20,086.95-30,109.77-13,515.03

Finding the Fourth Proportional to 20,086.95, 30,109.77 and 13,515.03

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Solution

The fourth proportional to 20,086.95, 30,109.77 and 13,515.03 is: 20,258.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.95 : 30,109.77 = 13,515.03 : x
  2. Step 2: Convert to fraction form
    20,086.95/30,109.77 = 13,515.03/x
  3. Step 3: Cross multiply
    20,086.95x = 30,109.77 × 13,515.03
  4. Step 4: Simplify right side
    20,086.95x = 406,934,444.84
  5. Step 5: Solve for x
    x = 406,934,444.84/20,086.95
  6. Step 6: Final answer
    x = 20,258.65

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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.