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Finding the Fourth Proportional to 9,930.80, 13,700.16 and 6,152.96

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Solution

The fourth proportional to 9,930.80, 13,700.16 and 6,152.96 is: 8,488.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,930.80 : 13,700.16 = 6,152.96 : x
  2. Step 2: Convert to fraction form
    9,930.80/13,700.16 = 6,152.96/x
  3. Step 3: Cross multiply
    9,930.80x = 13,700.16 × 6,152.96
  4. Step 4: Simplify right side
    9,930.80x = 84,296,536.47
  5. Step 5: Solve for x
    x = 84,296,536.47/9,930.80
  6. Step 6: Final answer
    x = 8,488.39

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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.