Home / 21,298.64-31,949.88-5,716.16

Finding the Fourth Proportional to 21,298.64, 31,949.88 and 5,716.16

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Solution

The fourth proportional to 21,298.64, 31,949.88 and 5,716.16 is: 8,574.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.64 : 31,949.88 = 5,716.16 : x
  2. Step 2: Convert to fraction form
    21,298.64/31,949.88 = 5,716.16/x
  3. Step 3: Cross multiply
    21,298.64x = 31,949.88 × 5,716.16
  4. Step 4: Simplify right side
    21,298.64x = 182,630,626.06
  5. Step 5: Solve for x
    x = 182,630,626.06/21,298.64
  6. Step 6: Final answer
    x = 8,574.76

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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.