Home / 21,217.36-31,823.58-5,636.20

Finding the Fourth Proportional to 21,217.36, 31,823.58 and 5,636.20

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Solution

The fourth proportional to 21,217.36, 31,823.58 and 5,636.20 is: 8,453.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.36 : 31,823.58 = 5,636.20 : x
  2. Step 2: Convert to fraction form
    21,217.36/31,823.58 = 5,636.20/x
  3. Step 3: Cross multiply
    21,217.36x = 31,823.58 × 5,636.20
  4. Step 4: Simplify right side
    21,217.36x = 179,364,061.60
  5. Step 5: Solve for x
    x = 179,364,061.60/21,217.36
  6. Step 6: Final answer
    x = 8,453.65

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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.