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Finding the Fourth Proportional to 13,750.31, 18,975.44 and 7,462.69

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Solution

The fourth proportional to 13,750.31, 18,975.44 and 7,462.69 is: 10,298.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.31 : 18,975.44 = 7,462.69 : x
  2. Step 2: Convert to fraction form
    13,750.31/18,975.44 = 7,462.69/x
  3. Step 3: Cross multiply
    13,750.31x = 18,975.44 × 7,462.69
  4. Step 4: Simplify right side
    13,750.31x = 141,607,797.55
  5. Step 5: Solve for x
    x = 141,607,797.55/13,750.31
  6. Step 6: Final answer
    x = 10,298.51

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1.5x scale

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.