Home / 20,748.93-31,108.29-8,265.21

Finding the Fourth Proportional to 20,748.93, 31,108.29 and 8,265.21

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Solution

The fourth proportional to 20,748.93, 31,108.29 and 8,265.21 is: 12,391.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.93 : 31,108.29 = 8,265.21 : x
  2. Step 2: Convert to fraction form
    20,748.93/31,108.29 = 8,265.21/x
  3. Step 3: Cross multiply
    20,748.93x = 31,108.29 × 8,265.21
  4. Step 4: Simplify right side
    20,748.93x = 257,116,549.59
  5. Step 5: Solve for x
    x = 257,116,549.59/20,748.93
  6. Step 6: Final answer
    x = 12,391.80

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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.