Home / 21,228.24-31,838.16-6,433.68

Finding the Fourth Proportional to 21,228.24, 31,838.16 and 6,433.68

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Solution

The fourth proportional to 21,228.24, 31,838.16 and 6,433.68 is: 9,649.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.24 : 31,838.16 = 6,433.68 : x
  2. Step 2: Convert to fraction form
    21,228.24/31,838.16 = 6,433.68/x
  3. Step 3: Cross multiply
    21,228.24x = 31,838.16 × 6,433.68
  4. Step 4: Simplify right side
    21,228.24x = 204,836,533.23
  5. Step 5: Solve for x
    x = 204,836,533.23/21,228.24
  6. Step 6: Final answer
    x = 9,649.25

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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.