Home / 13,740.10-20,610.15-8,815.30

Finding the Fourth Proportional to 13,740.10, 20,610.15 and 8,815.30

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Solution

The fourth proportional to 13,740.10, 20,610.15 and 8,815.30 is: 13,222.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.10 : 20,610.15 = 8,815.30 : x
  2. Step 2: Convert to fraction form
    13,740.10/20,610.15 = 8,815.30/x
  3. Step 3: Cross multiply
    13,740.10x = 20,610.15 × 8,815.30
  4. Step 4: Simplify right side
    13,740.10x = 181,684,655.30
  5. Step 5: Solve for x
    x = 181,684,655.30/13,740.10
  6. Step 6: Final answer
    x = 13,222.95

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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.