Home / 10,639.43-14,681.75-6,387.98

Finding the Fourth Proportional to 10,639.43, 14,681.75 and 6,387.98

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Solution

The fourth proportional to 10,639.43, 14,681.75 and 6,387.98 is: 8,815.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.43 : 14,681.75 = 6,387.98 : x
  2. Step 2: Convert to fraction form
    10,639.43/14,681.75 = 6,387.98/x
  3. Step 3: Cross multiply
    10,639.43x = 14,681.75 × 6,387.98
  4. Step 4: Simplify right side
    10,639.43x = 93,786,725.37
  5. Step 5: Solve for x
    x = 93,786,725.37/10,639.43
  6. Step 6: Final answer
    x = 8,815.01

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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.