Home / 20,717.60-31,070.22-7,388.24

Finding the Fourth Proportional to 20,717.60, 31,070.22 and 7,388.24

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Solution

The fourth proportional to 20,717.60, 31,070.22 and 7,388.24 is: 11,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.60 : 31,070.22 = 7,388.24 : x
  2. Step 2: Convert to fraction form
    20,717.60/31,070.22 = 7,388.24/x
  3. Step 3: Cross multiply
    20,717.60x = 31,070.22 × 7,388.24
  4. Step 4: Simplify right side
    20,717.60x = 229,554,059.16
  5. Step 5: Solve for x
    x = 229,554,059.16/20,717.60
  6. Step 6: Final answer
    x = 11,080.15

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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.