Home / 13,309.88-19,977.08-6,740.64

Finding the Fourth Proportional to 13,309.88, 19,977.08 and 6,740.64

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Solution

The fourth proportional to 13,309.88, 19,977.08 and 6,740.64 is: 10,117.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.88 : 19,977.08 = 6,740.64 : x
  2. Step 2: Convert to fraction form
    13,309.88/19,977.08 = 6,740.64/x
  3. Step 3: Cross multiply
    13,309.88x = 19,977.08 × 6,740.64
  4. Step 4: Simplify right side
    13,309.88x = 134,658,304.53
  5. Step 5: Solve for x
    x = 134,658,304.53/13,309.88
  6. Step 6: Final answer
    x = 10,117.17

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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.