Home / 39,722.98-54,818.70-21,819.66

Finding the Fourth Proportional to 39,722.98, 54,818.70 and 21,819.66

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Solution

The fourth proportional to 39,722.98, 54,818.70 and 21,819.66 is: 30,111.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,722.98 : 54,818.70 = 21,819.66 : x
  2. Step 2: Convert to fraction form
    39,722.98/54,818.70 = 21,819.66/x
  3. Step 3: Cross multiply
    39,722.98x = 54,818.70 × 21,819.66
  4. Step 4: Simplify right side
    39,722.98x = 1,196,125,395.64
  5. Step 5: Solve for x
    x = 1,196,125,395.64/39,722.98
  6. Step 6: Final answer
    x = 30,111.67

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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.