Home / 14,356.43-19,807.29-8,689.37

Finding the Fourth Proportional to 14,356.43, 19,807.29 and 8,689.37

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Solution

The fourth proportional to 14,356.43, 19,807.29 and 8,689.37 is: 11,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,356.43 : 19,807.29 = 8,689.37 : x
  2. Step 2: Convert to fraction form
    14,356.43/19,807.29 = 8,689.37/x
  3. Step 3: Cross multiply
    14,356.43x = 19,807.29 × 8,689.37
  4. Step 4: Simplify right side
    14,356.43x = 172,112,772.47
  5. Step 5: Solve for x
    x = 172,112,772.47/14,356.43
  6. Step 6: Final answer
    x = 11,988.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.