Home / 18,900.60-28,330.07-7,801.22

Finding the Fourth Proportional to 18,900.60, 28,330.07 and 7,801.22

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Solution

The fourth proportional to 18,900.60, 28,330.07 and 7,801.22 is: 11,693.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.60 : 28,330.07 = 7,801.22 : x
  2. Step 2: Convert to fraction form
    18,900.60/28,330.07 = 7,801.22/x
  3. Step 3: Cross multiply
    18,900.60x = 28,330.07 × 7,801.22
  4. Step 4: Simplify right side
    18,900.60x = 221,008,928.03
  5. Step 5: Solve for x
    x = 221,008,928.03/18,900.60
  6. Step 6: Final answer
    x = 11,693.22

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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.