Home / 11,653.12-16,076.80-7,239.68

Finding the Fourth Proportional to 11,653.12, 16,076.80 and 7,239.68

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Solution

The fourth proportional to 11,653.12, 16,076.80 and 7,239.68 is: 9,987.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,653.12 : 16,076.80 = 7,239.68 : x
  2. Step 2: Convert to fraction form
    11,653.12/16,076.80 = 7,239.68/x
  3. Step 3: Cross multiply
    11,653.12x = 16,076.80 × 7,239.68
  4. Step 4: Simplify right side
    11,653.12x = 116,390,887.42
  5. Step 5: Solve for x
    x = 116,390,887.42/11,653.12
  6. Step 6: Final answer
    x = 9,987.96

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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.