Home / 12,872.60-19,316.10-5,475.80

Finding the Fourth Proportional to 12,872.60, 19,316.10 and 5,475.80

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Solution

The fourth proportional to 12,872.60, 19,316.10 and 5,475.80 is: 8,216.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.60 : 19,316.10 = 5,475.80 : x
  2. Step 2: Convert to fraction form
    12,872.60/19,316.10 = 5,475.80/x
  3. Step 3: Cross multiply
    12,872.60x = 19,316.10 × 5,475.80
  4. Step 4: Simplify right side
    12,872.60x = 105,771,100.38
  5. Step 5: Solve for x
    x = 105,771,100.38/12,872.60
  6. Step 6: Final answer
    x = 8,216.76

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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.