Home / 12,370.72-17,070.96-6,780.64

Finding the Fourth Proportional to 12,370.72, 17,070.96 and 6,780.64

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Solution

The fourth proportional to 12,370.72, 17,070.96 and 6,780.64 is: 9,356.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,370.72 : 17,070.96 = 6,780.64 : x
  2. Step 2: Convert to fraction form
    12,370.72/17,070.96 = 6,780.64/x
  3. Step 3: Cross multiply
    12,370.72x = 17,070.96 × 6,780.64
  4. Step 4: Simplify right side
    12,370.72x = 115,752,034.21
  5. Step 5: Solve for x
    x = 115,752,034.21/12,370.72
  6. Step 6: Final answer
    x = 9,356.94

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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.