Home / 13,458.62-20,220.77-12,712.61

Finding the Fourth Proportional to 13,458.62, 20,220.77 and 12,712.61

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Solution

The fourth proportional to 13,458.62, 20,220.77 and 12,712.61 is: 19,099.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.62 : 20,220.77 = 12,712.61 : x
  2. Step 2: Convert to fraction form
    13,458.62/20,220.77 = 12,712.61/x
  3. Step 3: Cross multiply
    13,458.62x = 20,220.77 × 12,712.61
  4. Step 4: Simplify right side
    13,458.62x = 257,058,693.59
  5. Step 5: Solve for x
    x = 257,058,693.59/13,458.62
  6. Step 6: Final answer
    x = 19,099.94

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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.