Home / 21,308.14-31,962.19-5,725.77

Finding the Fourth Proportional to 21,308.14, 31,962.19 and 5,725.77

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Solution

The fourth proportional to 21,308.14, 31,962.19 and 5,725.77 is: 8,588.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.14 : 31,962.19 = 5,725.77 : x
  2. Step 2: Convert to fraction form
    21,308.14/31,962.19 = 5,725.77/x
  3. Step 3: Cross multiply
    21,308.14x = 31,962.19 × 5,725.77
  4. Step 4: Simplify right side
    21,308.14x = 183,008,148.64
  5. Step 5: Solve for x
    x = 183,008,148.64/21,308.14
  6. Step 6: Final answer
    x = 8,588.65

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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.