Home / 20,681.67-31,007.38-6,633.70

Finding the Fourth Proportional to 20,681.67, 31,007.38 and 6,633.70

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Solution

The fourth proportional to 20,681.67, 31,007.38 and 6,633.70 is: 9,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.67 : 31,007.38 = 6,633.70 : x
  2. Step 2: Convert to fraction form
    20,681.67/31,007.38 = 6,633.70/x
  3. Step 3: Cross multiply
    20,681.67x = 31,007.38 × 6,633.70
  4. Step 4: Simplify right side
    20,681.67x = 205,693,656.71
  5. Step 5: Solve for x
    x = 205,693,656.71/20,681.67
  6. Step 6: Final answer
    x = 9,945.70

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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.