Home / 18,666.86-28,003.05-5,517.50

Finding the Fourth Proportional to 18,666.86, 28,003.05 and 5,517.50

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Solution

The fourth proportional to 18,666.86, 28,003.05 and 5,517.50 is: 8,277.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.86 : 28,003.05 = 5,517.50 : x
  2. Step 2: Convert to fraction form
    18,666.86/28,003.05 = 5,517.50/x
  3. Step 3: Cross multiply
    18,666.86x = 28,003.05 × 5,517.50
  4. Step 4: Simplify right side
    18,666.86x = 154,506,688.36
  5. Step 5: Solve for x
    x = 154,506,688.36/18,666.86
  6. Step 6: Final answer
    x = 8,277.06

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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.