Home / 13,631.57-20,447.55-8,981.36

Finding the Fourth Proportional to 13,631.57, 20,447.55 and 8,981.36

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Solution

The fourth proportional to 13,631.57, 20,447.55 and 8,981.36 is: 13,472.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.57 : 20,447.55 = 8,981.36 : x
  2. Step 2: Convert to fraction form
    13,631.57/20,447.55 = 8,981.36/x
  3. Step 3: Cross multiply
    13,631.57x = 20,447.55 × 8,981.36
  4. Step 4: Simplify right side
    13,631.57x = 183,646,705.43
  5. Step 5: Solve for x
    x = 183,646,705.43/13,631.57
  6. Step 6: Final answer
    x = 13,472.17

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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.