Home / 13,117.70-18,088.13-8,861.37

Finding the Fourth Proportional to 13,117.70, 18,088.13 and 8,861.37

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Solution

The fourth proportional to 13,117.70, 18,088.13 and 8,861.37 is: 12,219.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.70 : 18,088.13 = 8,861.37 : x
  2. Step 2: Convert to fraction form
    13,117.70/18,088.13 = 8,861.37/x
  3. Step 3: Cross multiply
    13,117.70x = 18,088.13 × 8,861.37
  4. Step 4: Simplify right side
    13,117.70x = 160,285,612.54
  5. Step 5: Solve for x
    x = 160,285,612.54/13,117.70
  6. Step 6: Final answer
    x = 12,219.03

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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.