Home / 18,666.96-28,002.06-5,340.21

Finding the Fourth Proportional to 18,666.96, 28,002.06 and 5,340.21

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Solution

The fourth proportional to 18,666.96, 28,002.06 and 5,340.21 is: 8,010.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.96 : 28,002.06 = 5,340.21 : x
  2. Step 2: Convert to fraction form
    18,666.96/28,002.06 = 5,340.21/x
  3. Step 3: Cross multiply
    18,666.96x = 28,002.06 × 5,340.21
  4. Step 4: Simplify right side
    18,666.96x = 149,536,880.83
  5. Step 5: Solve for x
    x = 149,536,880.83/18,666.96
  6. Step 6: Final answer
    x = 8,010.78

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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.