Home / 13,495.86-18,621-8,190.54

Finding the Fourth Proportional to 13,495.86, 18,621 and 8,190.54

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Solution

The fourth proportional to 13,495.86, 18,621 and 8,190.54 is: 11,300.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,495.86 : 18,621 = 8,190.54 : x
  2. Step 2: Convert to fraction form
    13,495.86/18,621 = 8,190.54/x
  3. Step 3: Cross multiply
    13,495.86x = 18,621 × 8,190.54
  4. Step 4: Simplify right side
    13,495.86x = 152,516,045.34
  5. Step 5: Solve for x
    x = 152,516,045.34/13,495.86
  6. Step 6: Final answer
    x = 11,300.95

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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.