Home / 11,120.69-15,345.89-6,339.98

Finding the Fourth Proportional to 11,120.69, 15,345.89 and 6,339.98

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Solution

The fourth proportional to 11,120.69, 15,345.89 and 6,339.98 is: 8,748.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.69 : 15,345.89 = 6,339.98 : x
  2. Step 2: Convert to fraction form
    11,120.69/15,345.89 = 6,339.98/x
  3. Step 3: Cross multiply
    11,120.69x = 15,345.89 × 6,339.98
  4. Step 4: Simplify right side
    11,120.69x = 97,292,635.68
  5. Step 5: Solve for x
    x = 97,292,635.68/11,120.69
  6. Step 6: Final answer
    x = 8,748.79

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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.