Home / 11,293.40-15,590.40-7,518.80

Finding the Fourth Proportional to 11,293.40, 15,590.40 and 7,518.80

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Solution

The fourth proportional to 11,293.40, 15,590.40 and 7,518.80 is: 10,379.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,293.40 : 15,590.40 = 7,518.80 : x
  2. Step 2: Convert to fraction form
    11,293.40/15,590.40 = 7,518.80/x
  3. Step 3: Cross multiply
    11,293.40x = 15,590.40 × 7,518.80
  4. Step 4: Simplify right side
    11,293.40x = 117,221,099.52
  5. Step 5: Solve for x
    x = 117,221,099.52/11,293.40
  6. Step 6: Final answer
    x = 10,379.61

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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.