Home / 20,763.74-31,137.42-9,068.78

Finding the Fourth Proportional to 20,763.74, 31,137.42 and 9,068.78

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Solution

The fourth proportional to 20,763.74, 31,137.42 and 9,068.78 is: 13,599.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.74 : 31,137.42 = 9,068.78 : x
  2. Step 2: Convert to fraction form
    20,763.74/31,137.42 = 9,068.78/x
  3. Step 3: Cross multiply
    20,763.74x = 31,137.42 × 9,068.78
  4. Step 4: Simplify right side
    20,763.74x = 282,378,411.75
  5. Step 5: Solve for x
    x = 282,378,411.75/20,763.74
  6. Step 6: Final answer
    x = 13,599.59

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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.