Home / 13,509.08-18,644.82-8,734.94

Finding the Fourth Proportional to 13,509.08, 18,644.82 and 8,734.94

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Solution

The fourth proportional to 13,509.08, 18,644.82 and 8,734.94 is: 12,055.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.08 : 18,644.82 = 8,734.94 : x
  2. Step 2: Convert to fraction form
    13,509.08/18,644.82 = 8,734.94/x
  3. Step 3: Cross multiply
    13,509.08x = 18,644.82 × 8,734.94
  4. Step 4: Simplify right side
    13,509.08x = 162,861,384.01
  5. Step 5: Solve for x
    x = 162,861,384.01/13,509.08
  6. Step 6: Final answer
    x = 12,055.70

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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.