Home / 20,929.56-28,874.40-13,373.94

Finding the Fourth Proportional to 20,929.56, 28,874.40 and 13,373.94

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Solution

The fourth proportional to 20,929.56, 28,874.40 and 13,373.94 is: 18,450.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.56 : 28,874.40 = 13,373.94 : x
  2. Step 2: Convert to fraction form
    20,929.56/28,874.40 = 13,373.94/x
  3. Step 3: Cross multiply
    20,929.56x = 28,874.40 × 13,373.94
  4. Step 4: Simplify right side
    20,929.56x = 386,164,493.14
  5. Step 5: Solve for x
    x = 386,164,493.14/20,929.56
  6. Step 6: Final answer
    x = 18,450.67

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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.