Home / 20,915.48-31,393.73-15,353.06

Finding the Fourth Proportional to 20,915.48, 31,393.73 and 15,353.06

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Solution

The fourth proportional to 20,915.48, 31,393.73 and 15,353.06 is: 23,044.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.48 : 31,393.73 = 15,353.06 : x
  2. Step 2: Convert to fraction form
    20,915.48/31,393.73 = 15,353.06/x
  3. Step 3: Cross multiply
    20,915.48x = 31,393.73 × 15,353.06
  4. Step 4: Simplify right side
    20,915.48x = 481,989,791.96
  5. Step 5: Solve for x
    x = 481,989,791.96/20,915.48
  6. Step 6: Final answer
    x = 23,044.64

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1.5x scale

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.