Home / 13,316.76-19,977.30-6,391.26

Finding the Fourth Proportional to 13,316.76, 19,977.30 and 6,391.26

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Solution

The fourth proportional to 13,316.76, 19,977.30 and 6,391.26 is: 9,587.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.76 : 19,977.30 = 6,391.26 : x
  2. Step 2: Convert to fraction form
    13,316.76/19,977.30 = 6,391.26/x
  3. Step 3: Cross multiply
    13,316.76x = 19,977.30 × 6,391.26
  4. Step 4: Simplify right side
    13,316.76x = 127,680,118.40
  5. Step 5: Solve for x
    x = 127,680,118.40/13,316.76
  6. Step 6: Final answer
    x = 9,587.93

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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.