Home / 12,731.66-19,089.79-5,710.40

Finding the Fourth Proportional to 12,731.66, 19,089.79 and 5,710.40

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Solution

The fourth proportional to 12,731.66, 19,089.79 and 5,710.40 is: 8,562.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.66 : 19,089.79 = 5,710.40 : x
  2. Step 2: Convert to fraction form
    12,731.66/19,089.79 = 5,710.40/x
  3. Step 3: Cross multiply
    12,731.66x = 19,089.79 × 5,710.40
  4. Step 4: Simplify right side
    12,731.66x = 109,010,336.82
  5. Step 5: Solve for x
    x = 109,010,336.82/12,731.66
  6. Step 6: Final answer
    x = 8,562.15

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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.