Home / 18,669.18-28,015.48-7,575.92

Finding the Fourth Proportional to 18,669.18, 28,015.48 and 7,575.92

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Solution

The fourth proportional to 18,669.18, 28,015.48 and 7,575.92 is: 11,368.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669.18 : 28,015.48 = 7,575.92 : x
  2. Step 2: Convert to fraction form
    18,669.18/28,015.48 = 7,575.92/x
  3. Step 3: Cross multiply
    18,669.18x = 28,015.48 × 7,575.92
  4. Step 4: Simplify right side
    18,669.18x = 212,243,035.24
  5. Step 5: Solve for x
    x = 212,243,035.24/18,669.18
  6. Step 6: Final answer
    x = 11,368.63

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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.