Home / 15,137.40-20,889.28-8,764.26

Finding the Fourth Proportional to 15,137.40, 20,889.28 and 8,764.26

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Solution

The fourth proportional to 15,137.40, 20,889.28 and 8,764.26 is: 12,094.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,137.40 : 20,889.28 = 8,764.26 : x
  2. Step 2: Convert to fraction form
    15,137.40/20,889.28 = 8,764.26/x
  3. Step 3: Cross multiply
    15,137.40x = 20,889.28 × 8,764.26
  4. Step 4: Simplify right side
    15,137.40x = 183,079,081.13
  5. Step 5: Solve for x
    x = 183,079,081.13/15,137.40
  6. Step 6: Final answer
    x = 12,094.49

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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.