Home / 21,311.08-31,969.66-10,223.32

Finding the Fourth Proportional to 21,311.08, 31,969.66 and 10,223.32

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Solution

The fourth proportional to 21,311.08, 31,969.66 and 10,223.32 is: 15,336.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.08 : 31,969.66 = 10,223.32 : x
  2. Step 2: Convert to fraction form
    21,311.08/31,969.66 = 10,223.32/x
  3. Step 3: Cross multiply
    21,311.08x = 31,969.66 × 10,223.32
  4. Step 4: Simplify right side
    21,311.08x = 326,836,064.47
  5. Step 5: Solve for x
    x = 326,836,064.47/21,311.08
  6. Step 6: Final answer
    x = 15,336.44

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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.