Home / 18,722.31-28,069.58-8,850.05

Finding the Fourth Proportional to 18,722.31, 28,069.58 and 8,850.05

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Solution

The fourth proportional to 18,722.31, 28,069.58 and 8,850.05 is: 13,268.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.31 : 28,069.58 = 8,850.05 : x
  2. Step 2: Convert to fraction form
    18,722.31/28,069.58 = 8,850.05/x
  3. Step 3: Cross multiply
    18,722.31x = 28,069.58 × 8,850.05
  4. Step 4: Simplify right side
    18,722.31x = 248,417,001.88
  5. Step 5: Solve for x
    x = 248,417,001.88/18,722.31
  6. Step 6: Final answer
    x = 13,268.50

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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.