Home / 21,553.06-29,742.93-12,121.62

Finding the Fourth Proportional to 21,553.06, 29,742.93 and 12,121.62

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Solution

The fourth proportional to 21,553.06, 29,742.93 and 12,121.62 is: 16,727.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.06 : 29,742.93 = 12,121.62 : x
  2. Step 2: Convert to fraction form
    21,553.06/29,742.93 = 12,121.62/x
  3. Step 3: Cross multiply
    21,553.06x = 29,742.93 × 12,121.62
  4. Step 4: Simplify right side
    21,553.06x = 360,532,495.15
  5. Step 5: Solve for x
    x = 360,532,495.15/21,553.06
  6. Step 6: Final answer
    x = 16,727.67

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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.