Home / 13,137.40-19,701.42-5,739.76

Finding the Fourth Proportional to 13,137.40, 19,701.42 and 5,739.76

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Solution

The fourth proportional to 13,137.40, 19,701.42 and 5,739.76 is: 8,607.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.40 : 19,701.42 = 5,739.76 : x
  2. Step 2: Convert to fraction form
    13,137.40/19,701.42 = 5,739.76/x
  3. Step 3: Cross multiply
    13,137.40x = 19,701.42 × 5,739.76
  4. Step 4: Simplify right side
    13,137.40x = 113,081,422.46
  5. Step 5: Solve for x
    x = 113,081,422.46/13,137.40
  6. Step 6: Final answer
    x = 8,607.60

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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.