Home / 20,763.88-31,156.76-9,085.30

Finding the Fourth Proportional to 20,763.88, 31,156.76 and 9,085.30

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Solution

The fourth proportional to 20,763.88, 31,156.76 and 9,085.30 is: 13,632.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.88 : 31,156.76 = 9,085.30 : x
  2. Step 2: Convert to fraction form
    20,763.88/31,156.76 = 9,085.30/x
  3. Step 3: Cross multiply
    20,763.88x = 31,156.76 × 9,085.30
  4. Step 4: Simplify right side
    20,763.88x = 283,068,511.63
  5. Step 5: Solve for x
    x = 283,068,511.63/20,763.88
  6. Step 6: Final answer
    x = 13,632.74

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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.