Home / 11,890.48-16,416.40-7,643.52

Finding the Fourth Proportional to 11,890.48, 16,416.40 and 7,643.52

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Solution

The fourth proportional to 11,890.48, 16,416.40 and 7,643.52 is: 10,552.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.48 : 16,416.40 = 7,643.52 : x
  2. Step 2: Convert to fraction form
    11,890.48/16,416.40 = 7,643.52/x
  3. Step 3: Cross multiply
    11,890.48x = 16,416.40 × 7,643.52
  4. Step 4: Simplify right side
    11,890.48x = 125,479,081.73
  5. Step 5: Solve for x
    x = 125,479,081.73/11,890.48
  6. Step 6: Final answer
    x = 10,552.90

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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.