Home / 9,940.50-13,720.77-6,628.50

Finding the Fourth Proportional to 9,940.50, 13,720.77 and 6,628.50

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Solution

The fourth proportional to 9,940.50, 13,720.77 and 6,628.50 is: 9,149.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.50 : 13,720.77 = 6,628.50 : x
  2. Step 2: Convert to fraction form
    9,940.50/13,720.77 = 6,628.50/x
  3. Step 3: Cross multiply
    9,940.50x = 13,720.77 × 6,628.50
  4. Step 4: Simplify right side
    9,940.50x = 90,948,123.95
  5. Step 5: Solve for x
    x = 90,948,123.95/9,940.50
  6. Step 6: Final answer
    x = 9,149.25

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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.