Home / 13,990.86-20,993.58-5,677.02

Finding the Fourth Proportional to 13,990.86, 20,993.58 and 5,677.02

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Solution

The fourth proportional to 13,990.86, 20,993.58 and 5,677.02 is: 8,518.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.86 : 20,993.58 = 5,677.02 : x
  2. Step 2: Convert to fraction form
    13,990.86/20,993.58 = 5,677.02/x
  3. Step 3: Cross multiply
    13,990.86x = 20,993.58 × 5,677.02
  4. Step 4: Simplify right side
    13,990.86x = 119,180,973.53
  5. Step 5: Solve for x
    x = 119,180,973.53/13,990.86
  6. Step 6: Final answer
    x = 8,518.49

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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.