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Finding the Fourth Proportional to 10,448.18, 15,672.37 and 2,656.99

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Solution

The fourth proportional to 10,448.18, 15,672.37 and 2,656.99 is: 3,985.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,448.18 : 15,672.37 = 2,656.99 : x
  2. Step 2: Convert to fraction form
    10,448.18/15,672.37 = 2,656.99/x
  3. Step 3: Cross multiply
    10,448.18x = 15,672.37 × 2,656.99
  4. Step 4: Simplify right side
    10,448.18x = 41,641,330.37
  5. Step 5: Solve for x
    x = 41,641,330.37/10,448.18
  6. Step 6: Final answer
    x = 3,985.51

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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.