Home / 12,871.20-19,273.68-8,916.84

Finding the Fourth Proportional to 12,871.20, 19,273.68 and 8,916.84

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Solution

The fourth proportional to 12,871.20, 19,273.68 and 8,916.84 is: 13,352.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.20 : 19,273.68 = 8,916.84 : x
  2. Step 2: Convert to fraction form
    12,871.20/19,273.68 = 8,916.84/x
  3. Step 3: Cross multiply
    12,871.20x = 19,273.68 × 8,916.84
  4. Step 4: Simplify right side
    12,871.20x = 171,860,320.77
  5. Step 5: Solve for x
    x = 171,860,320.77/12,871.20
  6. Step 6: Final answer
    x = 13,352.32

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1.5x scale

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.