Home / 13,401.51-18,478.94-8,549.77

Finding the Fourth Proportional to 13,401.51, 18,478.94 and 8,549.77

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Solution

The fourth proportional to 13,401.51, 18,478.94 and 8,549.77 is: 11,789.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.51 : 18,478.94 = 8,549.77 : x
  2. Step 2: Convert to fraction form
    13,401.51/18,478.94 = 8,549.77/x
  3. Step 3: Cross multiply
    13,401.51x = 18,478.94 × 8,549.77
  4. Step 4: Simplify right side
    13,401.51x = 157,990,686.84
  5. Step 5: Solve for x
    x = 157,990,686.84/13,401.51
  6. Step 6: Final answer
    x = 11,789.02

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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.