Home / 21,050.90-29,052.28-15,736.50

Finding the Fourth Proportional to 21,050.90, 29,052.28 and 15,736.50

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Solution

The fourth proportional to 21,050.90, 29,052.28 and 15,736.50 is: 21,717.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050.90 : 29,052.28 = 15,736.50 : x
  2. Step 2: Convert to fraction form
    21,050.90/29,052.28 = 15,736.50/x
  3. Step 3: Cross multiply
    21,050.90x = 29,052.28 × 15,736.50
  4. Step 4: Simplify right side
    21,050.90x = 457,181,204.22
  5. Step 5: Solve for x
    x = 457,181,204.22/21,050.90
  6. Step 6: Final answer
    x = 21,717.89

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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.