Home / 13,740.18-18,949.56-8,698.74

Finding the Fourth Proportional to 13,740.18, 18,949.56 and 8,698.74

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Solution

The fourth proportional to 13,740.18, 18,949.56 and 8,698.74 is: 11,996.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.18 : 18,949.56 = 8,698.74 : x
  2. Step 2: Convert to fraction form
    13,740.18/18,949.56 = 8,698.74/x
  3. Step 3: Cross multiply
    13,740.18x = 18,949.56 × 8,698.74
  4. Step 4: Simplify right side
    13,740.18x = 164,837,295.55
  5. Step 5: Solve for x
    x = 164,837,295.55/13,740.18
  6. Step 6: Final answer
    x = 11,996.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.