Home / 13,401.48-18,486.32-8,356.95

Finding the Fourth Proportional to 13,401.48, 18,486.32 and 8,356.95

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Solution

The fourth proportional to 13,401.48, 18,486.32 and 8,356.95 is: 11,527.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.48 : 18,486.32 = 8,356.95 : x
  2. Step 2: Convert to fraction form
    13,401.48/18,486.32 = 8,356.95/x
  3. Step 3: Cross multiply
    13,401.48x = 18,486.32 × 8,356.95
  4. Step 4: Simplify right side
    13,401.48x = 154,489,140.82
  5. Step 5: Solve for x
    x = 154,489,140.82/13,401.48
  6. Step 6: Final answer
    x = 11,527.76

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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.