Home / 10,122.25-15,193.10-4,931.77

Finding the Fourth Proportional to 10,122.25, 15,193.10 and 4,931.77

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Solution

The fourth proportional to 10,122.25, 15,193.10 and 4,931.77 is: 7,402.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.25 : 15,193.10 = 4,931.77 : x
  2. Step 2: Convert to fraction form
    10,122.25/15,193.10 = 4,931.77/x
  3. Step 3: Cross multiply
    10,122.25x = 15,193.10 × 4,931.77
  4. Step 4: Simplify right side
    10,122.25x = 74,928,874.79
  5. Step 5: Solve for x
    x = 74,928,874.79/10,122.25
  6. Step 6: Final answer
    x = 7,402.39

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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.