Home / 13,709.08-18,911.10-8,664.04

Finding the Fourth Proportional to 13,709.08, 18,911.10 and 8,664.04

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Solution

The fourth proportional to 13,709.08, 18,911.10 and 8,664.04 is: 11,951.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.08 : 18,911.10 = 8,664.04 : x
  2. Step 2: Convert to fraction form
    13,709.08/18,911.10 = 8,664.04/x
  3. Step 3: Cross multiply
    13,709.08x = 18,911.10 × 8,664.04
  4. Step 4: Simplify right side
    13,709.08x = 163,846,526.84
  5. Step 5: Solve for x
    x = 163,846,526.84/13,709.08
  6. Step 6: Final answer
    x = 11,951.68

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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.