Home / 12,506.47-18,761.29-4,192.49

Finding the Fourth Proportional to 12,506.47, 18,761.29 and 4,192.49

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Solution

The fourth proportional to 12,506.47, 18,761.29 and 4,192.49 is: 6,289.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,506.47 : 18,761.29 = 4,192.49 : x
  2. Step 2: Convert to fraction form
    12,506.47/18,761.29 = 4,192.49/x
  3. Step 3: Cross multiply
    12,506.47x = 18,761.29 × 4,192.49
  4. Step 4: Simplify right side
    12,506.47x = 78,656,557.13
  5. Step 5: Solve for x
    x = 78,656,557.13/12,506.47
  6. Step 6: Final answer
    x = 6,289.27

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1.5x scale

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.