Home / 13,139.53-19,712.27-4,374.79

Finding the Fourth Proportional to 13,139.53, 19,712.27 and 4,374.79

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Solution

The fourth proportional to 13,139.53, 19,712.27 and 4,374.79 is: 6,563.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.53 : 19,712.27 = 4,374.79 : x
  2. Step 2: Convert to fraction form
    13,139.53/19,712.27 = 4,374.79/x
  3. Step 3: Cross multiply
    13,139.53x = 19,712.27 × 4,374.79
  4. Step 4: Simplify right side
    13,139.53x = 86,237,041.67
  5. Step 5: Solve for x
    x = 86,237,041.67/13,139.53
  6. Step 6: Final answer
    x = 6,563.18

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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.