Home / 13,621.32-20,446.30-12,071.26

Finding the Fourth Proportional to 13,621.32, 20,446.30 and 12,071.26

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Solution

The fourth proportional to 13,621.32, 20,446.30 and 12,071.26 is: 18,119.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.32 : 20,446.30 = 12,071.26 : x
  2. Step 2: Convert to fraction form
    13,621.32/20,446.30 = 12,071.26/x
  3. Step 3: Cross multiply
    13,621.32x = 20,446.30 × 12,071.26
  4. Step 4: Simplify right side
    13,621.32x = 246,812,603.34
  5. Step 5: Solve for x
    x = 246,812,603.34/13,621.32
  6. Step 6: Final answer
    x = 18,119.58

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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.