Home / 12,739.10-19,116.09-5,342.91

Finding the Fourth Proportional to 12,739.10, 19,116.09 and 5,342.91

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Solution

The fourth proportional to 12,739.10, 19,116.09 and 5,342.91 is: 8,017.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.10 : 19,116.09 = 5,342.91 : x
  2. Step 2: Convert to fraction form
    12,739.10/19,116.09 = 5,342.91/x
  3. Step 3: Cross multiply
    12,739.10x = 19,116.09 × 5,342.91
  4. Step 4: Simplify right side
    12,739.10x = 102,135,548.42
  5. Step 5: Solve for x
    x = 102,135,548.42/12,739.10
  6. Step 6: Final answer
    x = 8,017.49

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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.