Home / 12,518.92-18,781.91-6,271.39

Finding the Fourth Proportional to 12,518.92, 18,781.91 and 6,271.39

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Solution

The fourth proportional to 12,518.92, 18,781.91 and 6,271.39 is: 9,408.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.92 : 18,781.91 = 6,271.39 : x
  2. Step 2: Convert to fraction form
    12,518.92/18,781.91 = 6,271.39/x
  3. Step 3: Cross multiply
    12,518.92x = 18,781.91 × 6,271.39
  4. Step 4: Simplify right side
    12,518.92x = 117,788,557.29
  5. Step 5: Solve for x
    x = 117,788,557.29/12,518.92
  6. Step 6: Final answer
    x = 9,408.85

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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.