Home / 26,931.06-40,396.60-12,122.68

Finding the Fourth Proportional to 26,931.06, 40,396.60 and 12,122.68

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Solution

The fourth proportional to 26,931.06, 40,396.60 and 12,122.68 is: 18,184.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,931.06 : 40,396.60 = 12,122.68 : x
  2. Step 2: Convert to fraction form
    26,931.06/40,396.60 = 12,122.68/x
  3. Step 3: Cross multiply
    26,931.06x = 40,396.60 × 12,122.68
  4. Step 4: Simplify right side
    26,931.06x = 489,715,054.89
  5. Step 5: Solve for x
    x = 489,715,054.89/26,931.06
  6. Step 6: Final answer
    x = 18,184.02

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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.