Home / 18,987.61-26,200.65-11,028.55

Finding the Fourth Proportional to 18,987.61, 26,200.65 and 11,028.55

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Solution

The fourth proportional to 18,987.61, 26,200.65 and 11,028.55 is: 15,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.61 : 26,200.65 = 11,028.55 : x
  2. Step 2: Convert to fraction form
    18,987.61/26,200.65 = 11,028.55/x
  3. Step 3: Cross multiply
    18,987.61x = 26,200.65 × 11,028.55
  4. Step 4: Simplify right side
    18,987.61x = 288,955,178.56
  5. Step 5: Solve for x
    x = 288,955,178.56/18,987.61
  6. Step 6: Final answer
    x = 15,218.09

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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.