Home / 20,686.59-31,029.35-6,646.59

Finding the Fourth Proportional to 20,686.59, 31,029.35 and 6,646.59

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Solution

The fourth proportional to 20,686.59, 31,029.35 and 6,646.59 is: 9,969.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.59 : 31,029.35 = 6,646.59 : x
  2. Step 2: Convert to fraction form
    20,686.59/31,029.35 = 6,646.59/x
  3. Step 3: Cross multiply
    20,686.59x = 31,029.35 × 6,646.59
  4. Step 4: Simplify right side
    20,686.59x = 206,239,334.18
  5. Step 5: Solve for x
    x = 206,239,334.18/20,686.59
  6. Step 6: Final answer
    x = 9,969.71

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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.