Home / 21,308.40-31,962.56-5,726.03

Finding the Fourth Proportional to 21,308.40, 31,962.56 and 5,726.03

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Solution

The fourth proportional to 21,308.40, 31,962.56 and 5,726.03 is: 8,589.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.40 : 31,962.56 = 5,726.03 : x
  2. Step 2: Convert to fraction form
    21,308.40/31,962.56 = 5,726.03/x
  3. Step 3: Cross multiply
    21,308.40x = 31,962.56 × 5,726.03
  4. Step 4: Simplify right side
    21,308.40x = 183,018,388.99
  5. Step 5: Solve for x
    x = 183,018,388.99/21,308.40
  6. Step 6: Final answer
    x = 8,589.03

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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.