Home / 13,490.84-18,620.34-8,766.92

Finding the Fourth Proportional to 13,490.84, 18,620.34 and 8,766.92

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Solution

The fourth proportional to 13,490.84, 18,620.34 and 8,766.92 is: 12,100.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.84 : 18,620.34 = 8,766.92 : x
  2. Step 2: Convert to fraction form
    13,490.84/18,620.34 = 8,766.92/x
  3. Step 3: Cross multiply
    13,490.84x = 18,620.34 × 8,766.92
  4. Step 4: Simplify right side
    13,490.84x = 163,243,031.15
  5. Step 5: Solve for x
    x = 163,243,031.15/13,490.84
  6. Step 6: Final answer
    x = 12,100.29

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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.