Home / 12,379.32-17,078.58-7,070.04

Finding the Fourth Proportional to 12,379.32, 17,078.58 and 7,070.04

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Solution

The fourth proportional to 12,379.32, 17,078.58 and 7,070.04 is: 9,753.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.32 : 17,078.58 = 7,070.04 : x
  2. Step 2: Convert to fraction form
    12,379.32/17,078.58 = 7,070.04/x
  3. Step 3: Cross multiply
    12,379.32x = 17,078.58 × 7,070.04
  4. Step 4: Simplify right side
    12,379.32x = 120,746,243.74
  5. Step 5: Solve for x
    x = 120,746,243.74/12,379.32
  6. Step 6: Final answer
    x = 9,753.87

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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.