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Finding the Fourth Proportional to 7,421.83, 11,150.16 and 7,001.51

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Solution

The fourth proportional to 7,421.83, 11,150.16 and 7,001.51 is: 10,518.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.83 : 11,150.16 = 7,001.51 : x
  2. Step 2: Convert to fraction form
    7,421.83/11,150.16 = 7,001.51/x
  3. Step 3: Cross multiply
    7,421.83x = 11,150.16 × 7,001.51
  4. Step 4: Simplify right side
    7,421.83x = 78,067,874.74
  5. Step 5: Solve for x
    x = 78,067,874.74/7,421.83
  6. Step 6: Final answer
    x = 10,518.69

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.