Home / 13,400.72-18,502.58-8,935

Finding the Fourth Proportional to 13,400.72, 18,502.58 and 8,935

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Solution

The fourth proportional to 13,400.72, 18,502.58 and 8,935 is: 12,336.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.72 : 18,502.58 = 8,935 : x
  2. Step 2: Convert to fraction form
    13,400.72/18,502.58 = 8,935/x
  3. Step 3: Cross multiply
    13,400.72x = 18,502.58 × 8,935
  4. Step 4: Simplify right side
    13,400.72x = 165,320,552.30
  5. Step 5: Solve for x
    x = 165,320,552.30/13,400.72
  6. Step 6: Final answer
    x = 12,336.69

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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.