Home / 10,399.86-14,352.80-5,684.85

Finding the Fourth Proportional to 10,399.86, 14,352.80 and 5,684.85

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Solution

The fourth proportional to 10,399.86, 14,352.80 and 5,684.85 is: 7,845.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,399.86 : 14,352.80 = 5,684.85 : x
  2. Step 2: Convert to fraction form
    10,399.86/14,352.80 = 5,684.85/x
  3. Step 3: Cross multiply
    10,399.86x = 14,352.80 × 5,684.85
  4. Step 4: Simplify right side
    10,399.86x = 81,593,515.08
  5. Step 5: Solve for x
    x = 81,593,515.08/10,399.86
  6. Step 6: Final answer
    x = 7,845.64

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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.