Home / 9,930.10-13,701.60-6,392.80

Finding the Fourth Proportional to 9,930.10, 13,701.60 and 6,392.80

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Solution

The fourth proportional to 9,930.10, 13,701.60 and 6,392.80 is: 8,820.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,930.10 : 13,701.60 = 6,392.80 : x
  2. Step 2: Convert to fraction form
    9,930.10/13,701.60 = 6,392.80/x
  3. Step 3: Cross multiply
    9,930.10x = 13,701.60 × 6,392.80
  4. Step 4: Simplify right side
    9,930.10x = 87,591,588.48
  5. Step 5: Solve for x
    x = 87,591,588.48/9,930.10
  6. Step 6: Final answer
    x = 8,820.82

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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.