Home / 13,128.36-19,691.34-4,364.28

Finding the Fourth Proportional to 13,128.36, 19,691.34 and 4,364.28

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Solution

The fourth proportional to 13,128.36, 19,691.34 and 4,364.28 is: 6,546.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.36 : 19,691.34 = 4,364.28 : x
  2. Step 2: Convert to fraction form
    13,128.36/19,691.34 = 4,364.28/x
  3. Step 3: Cross multiply
    13,128.36x = 19,691.34 × 4,364.28
  4. Step 4: Simplify right side
    13,128.36x = 85,938,521.34
  5. Step 5: Solve for x
    x = 85,938,521.34/13,128.36
  6. Step 6: Final answer
    x = 6,546.02

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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.