Home / 12,720.53-19,077.10-4,398.39

Finding the Fourth Proportional to 12,720.53, 19,077.10 and 4,398.39

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Solution

The fourth proportional to 12,720.53, 19,077.10 and 4,398.39 is: 6,596.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.53 : 19,077.10 = 4,398.39 : x
  2. Step 2: Convert to fraction form
    12,720.53/19,077.10 = 4,398.39/x
  3. Step 3: Cross multiply
    12,720.53x = 19,077.10 × 4,398.39
  4. Step 4: Simplify right side
    12,720.53x = 83,908,525.87
  5. Step 5: Solve for x
    x = 83,908,525.87/12,720.53
  6. Step 6: Final answer
    x = 6,596.31

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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.