Home / 20,858.68-31,287.66-7,007.68

Finding the Fourth Proportional to 20,858.68, 31,287.66 and 7,007.68

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Solution

The fourth proportional to 20,858.68, 31,287.66 and 7,007.68 is: 10,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.68 : 31,287.66 = 7,007.68 : x
  2. Step 2: Convert to fraction form
    20,858.68/31,287.66 = 7,007.68/x
  3. Step 3: Cross multiply
    20,858.68x = 31,287.66 × 7,007.68
  4. Step 4: Simplify right side
    20,858.68x = 219,253,909.23
  5. Step 5: Solve for x
    x = 219,253,909.23/20,858.68
  6. Step 6: Final answer
    x = 10,511.40

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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.