Home / 18,693.18-28,032.48-9,330.12

Finding the Fourth Proportional to 18,693.18, 28,032.48 and 9,330.12

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Solution

The fourth proportional to 18,693.18, 28,032.48 and 9,330.12 is: 13,991.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693.18 : 28,032.48 = 9,330.12 : x
  2. Step 2: Convert to fraction form
    18,693.18/28,032.48 = 9,330.12/x
  3. Step 3: Cross multiply
    18,693.18x = 28,032.48 × 9,330.12
  4. Step 4: Simplify right side
    18,693.18x = 261,546,402.30
  5. Step 5: Solve for x
    x = 261,546,402.30/18,693.18
  6. Step 6: Final answer
    x = 13,991.54

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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.