Home / 26,929.80-40,365.90-12,136.20

Finding the Fourth Proportional to 26,929.80, 40,365.90 and 12,136.20

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Solution

The fourth proportional to 26,929.80, 40,365.90 and 12,136.20 is: 18,191.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,929.80 : 40,365.90 = 12,136.20 : x
  2. Step 2: Convert to fraction form
    26,929.80/40,365.90 = 12,136.20/x
  3. Step 3: Cross multiply
    26,929.80x = 40,365.90 × 12,136.20
  4. Step 4: Simplify right side
    26,929.80x = 489,888,635.58
  5. Step 5: Solve for x
    x = 489,888,635.58/26,929.80
  6. Step 6: Final answer
    x = 18,191.32

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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.