Home / 31,776.64-47,665.12-13,066.88

Finding the Fourth Proportional to 31,776.64, 47,665.12 and 13,066.88

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Solution

The fourth proportional to 31,776.64, 47,665.12 and 13,066.88 is: 19,600.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,776.64 : 47,665.12 = 13,066.88 : x
  2. Step 2: Convert to fraction form
    31,776.64/47,665.12 = 13,066.88/x
  3. Step 3: Cross multiply
    31,776.64x = 47,665.12 × 13,066.88
  4. Step 4: Simplify right side
    31,776.64x = 622,834,403.23
  5. Step 5: Solve for x
    x = 622,834,403.23/31,776.64
  6. Step 6: Final answer
    x = 19,600.39

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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.