Home / 12,819.02-19,230.59-5,423.55

Finding the Fourth Proportional to 12,819.02, 19,230.59 and 5,423.55

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Solution

The fourth proportional to 12,819.02, 19,230.59 and 5,423.55 is: 8,136.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.02 : 19,230.59 = 5,423.55 : x
  2. Step 2: Convert to fraction form
    12,819.02/19,230.59 = 5,423.55/x
  3. Step 3: Cross multiply
    12,819.02x = 19,230.59 × 5,423.55
  4. Step 4: Simplify right side
    12,819.02x = 104,297,974.51
  5. Step 5: Solve for x
    x = 104,297,974.51/12,819.02
  6. Step 6: Final answer
    x = 8,136.19

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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.