Home / 21,197.90-31,798.12-5,615.48

Finding the Fourth Proportional to 21,197.90, 31,798.12 and 5,615.48

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Solution

The fourth proportional to 21,197.90, 31,798.12 and 5,615.48 is: 8,423.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.90 : 31,798.12 = 5,615.48 : x
  2. Step 2: Convert to fraction form
    21,197.90/31,798.12 = 5,615.48/x
  3. Step 3: Cross multiply
    21,197.90x = 31,798.12 × 5,615.48
  4. Step 4: Simplify right side
    21,197.90x = 178,561,706.90
  5. Step 5: Solve for x
    x = 178,561,706.90/21,197.90
  6. Step 6: Final answer
    x = 8,423.56

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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.