Home / 13,651.78-20,486.38-8,981.18

Finding the Fourth Proportional to 13,651.78, 20,486.38 and 8,981.18

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Solution

The fourth proportional to 13,651.78, 20,486.38 and 8,981.18 is: 13,477.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.78 : 20,486.38 = 8,981.18 : x
  2. Step 2: Convert to fraction form
    13,651.78/20,486.38 = 8,981.18/x
  3. Step 3: Cross multiply
    13,651.78x = 20,486.38 × 8,981.18
  4. Step 4: Simplify right side
    13,651.78x = 183,991,866.33
  5. Step 5: Solve for x
    x = 183,991,866.33/13,651.78
  6. Step 6: Final answer
    x = 13,477.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.