Home / 10,761.59-16,143.31-2,970.40

Finding the Fourth Proportional to 10,761.59, 16,143.31 and 2,970.40

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Solution

The fourth proportional to 10,761.59, 16,143.31 and 2,970.40 is: 4,455.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,761.59 : 16,143.31 = 2,970.40 : x
  2. Step 2: Convert to fraction form
    10,761.59/16,143.31 = 2,970.40/x
  3. Step 3: Cross multiply
    10,761.59x = 16,143.31 × 2,970.40
  4. Step 4: Simplify right side
    10,761.59x = 47,952,080.60
  5. Step 5: Solve for x
    x = 47,952,080.60/10,761.59
  6. Step 6: Final answer
    x = 4,455.86

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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.