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Finding the Fourth Proportional to 10,398.58, 15,611.28 and 8,927.26

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Solution

The fourth proportional to 10,398.58, 15,611.28 and 8,927.26 is: 13,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,398.58 : 15,611.28 = 8,927.26 : x
  2. Step 2: Convert to fraction form
    10,398.58/15,611.28 = 8,927.26/x
  3. Step 3: Cross multiply
    10,398.58x = 15,611.28 × 8,927.26
  4. Step 4: Simplify right side
    10,398.58x = 139,365,832.80
  5. Step 5: Solve for x
    x = 139,365,832.80/10,398.58
  6. Step 6: Final answer
    x = 13,402.40

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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.