Home / 21,218.60-31,827.84-5,636.24

Finding the Fourth Proportional to 21,218.60, 31,827.84 and 5,636.24

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Solution

The fourth proportional to 21,218.60, 31,827.84 and 5,636.24 is: 8,454.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.60 : 31,827.84 = 5,636.24 : x
  2. Step 2: Convert to fraction form
    21,218.60/31,827.84 = 5,636.24/x
  3. Step 3: Cross multiply
    21,218.60x = 31,827.84 × 5,636.24
  4. Step 4: Simplify right side
    21,218.60x = 179,389,344.92
  5. Step 5: Solve for x
    x = 179,389,344.92/21,218.60
  6. Step 6: Final answer
    x = 8,454.34

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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.