Home / 20,663.22-28,521.69-12,164.67

Finding the Fourth Proportional to 20,663.22, 28,521.69 and 12,164.67

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Solution

The fourth proportional to 20,663.22, 28,521.69 and 12,164.67 is: 16,791.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.22 : 28,521.69 = 12,164.67 : x
  2. Step 2: Convert to fraction form
    20,663.22/28,521.69 = 12,164.67/x
  3. Step 3: Cross multiply
    20,663.22x = 28,521.69 × 12,164.67
  4. Step 4: Simplify right side
    20,663.22x = 346,956,946.69
  5. Step 5: Solve for x
    x = 346,956,946.69/20,663.22
  6. Step 6: Final answer
    x = 16,791.04

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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.