Home / 20,775.17-31,153.52-5,980.62

Finding the Fourth Proportional to 20,775.17, 31,153.52 and 5,980.62

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Solution

The fourth proportional to 20,775.17, 31,153.52 and 5,980.62 is: 8,968.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.17 : 31,153.52 = 5,980.62 : x
  2. Step 2: Convert to fraction form
    20,775.17/31,153.52 = 5,980.62/x
  3. Step 3: Cross multiply
    20,775.17x = 31,153.52 × 5,980.62
  4. Step 4: Simplify right side
    20,775.17x = 186,317,496.56
  5. Step 5: Solve for x
    x = 186,317,496.56/20,775.17
  6. Step 6: Final answer
    x = 8,968.28

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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.