Home / 21,260.45-31,891.89-5,465.59

Finding the Fourth Proportional to 21,260.45, 31,891.89 and 5,465.59

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Solution

The fourth proportional to 21,260.45, 31,891.89 and 5,465.59 is: 8,198.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.45 : 31,891.89 = 5,465.59 : x
  2. Step 2: Convert to fraction form
    21,260.45/31,891.89 = 5,465.59/x
  3. Step 3: Cross multiply
    21,260.45x = 31,891.89 × 5,465.59
  4. Step 4: Simplify right side
    21,260.45x = 174,307,995.07
  5. Step 5: Solve for x
    x = 174,307,995.07/21,260.45
  6. Step 6: Final answer
    x = 8,198.70

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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.