Home / 21,153.49-31,730.27-8,671.29

Finding the Fourth Proportional to 21,153.49, 31,730.27 and 8,671.29

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Solution

The fourth proportional to 21,153.49, 31,730.27 and 8,671.29 is: 13,006.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.49 : 31,730.27 = 8,671.29 : x
  2. Step 2: Convert to fraction form
    21,153.49/31,730.27 = 8,671.29/x
  3. Step 3: Cross multiply
    21,153.49x = 31,730.27 × 8,671.29
  4. Step 4: Simplify right side
    21,153.49x = 275,142,210.60
  5. Step 5: Solve for x
    x = 275,142,210.60/21,153.49
  6. Step 6: Final answer
    x = 13,006.94

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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.