Home / 11,172.64-15,420.40-7,395.88

Finding the Fourth Proportional to 11,172.64, 15,420.40 and 7,395.88

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Solution

The fourth proportional to 11,172.64, 15,420.40 and 7,395.88 is: 10,207.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.64 : 15,420.40 = 7,395.88 : x
  2. Step 2: Convert to fraction form
    11,172.64/15,420.40 = 7,395.88/x
  3. Step 3: Cross multiply
    11,172.64x = 15,420.40 × 7,395.88
  4. Step 4: Simplify right side
    11,172.64x = 114,047,427.95
  5. Step 5: Solve for x
    x = 114,047,427.95/11,172.64
  6. Step 6: Final answer
    x = 10,207.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.