Home / 18,616.50-25,690.77-10,661.36

Finding the Fourth Proportional to 18,616.50, 25,690.77 and 10,661.36

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Solution

The fourth proportional to 18,616.50, 25,690.77 and 10,661.36 is: 14,712.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.50 : 25,690.77 = 10,661.36 : x
  2. Step 2: Convert to fraction form
    18,616.50/25,690.77 = 10,661.36/x
  3. Step 3: Cross multiply
    18,616.50x = 25,690.77 × 10,661.36
  4. Step 4: Simplify right side
    18,616.50x = 273,898,419.19
  5. Step 5: Solve for x
    x = 273,898,419.19/18,616.50
  6. Step 6: Final answer
    x = 14,712.67

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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.