Home / 21,276.16-31,893.12-10,864.64

Finding the Fourth Proportional to 21,276.16, 31,893.12 and 10,864.64

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Solution

The fourth proportional to 21,276.16, 31,893.12 and 10,864.64 is: 16,286.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.16 : 31,893.12 = 10,864.64 : x
  2. Step 2: Convert to fraction form
    21,276.16/31,893.12 = 10,864.64/x
  3. Step 3: Cross multiply
    21,276.16x = 31,893.12 × 10,864.64
  4. Step 4: Simplify right side
    21,276.16x = 346,507,267.28
  5. Step 5: Solve for x
    x = 346,507,267.28/21,276.16
  6. Step 6: Final answer
    x = 16,286.18

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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.