Home / 18,987.25-26,202.30-10,489.95

Finding the Fourth Proportional to 18,987.25, 26,202.30 and 10,489.95

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Solution

The fourth proportional to 18,987.25, 26,202.30 and 10,489.95 is: 14,476.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.25 : 26,202.30 = 10,489.95 : x
  2. Step 2: Convert to fraction form
    18,987.25/26,202.30 = 10,489.95/x
  3. Step 3: Cross multiply
    18,987.25x = 26,202.30 × 10,489.95
  4. Step 4: Simplify right side
    18,987.25x = 274,860,816.89
  5. Step 5: Solve for x
    x = 274,860,816.89/18,987.25
  6. Step 6: Final answer
    x = 14,476.07

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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.