Home / 21,270.62-29,289.39-20,023.76

Finding the Fourth Proportional to 21,270.62, 29,289.39 and 20,023.76

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Solution

The fourth proportional to 21,270.62, 29,289.39 and 20,023.76 is: 27,572.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.62 : 29,289.39 = 20,023.76 : x
  2. Step 2: Convert to fraction form
    21,270.62/29,289.39 = 20,023.76/x
  3. Step 3: Cross multiply
    21,270.62x = 29,289.39 × 20,023.76
  4. Step 4: Simplify right side
    21,270.62x = 586,483,715.91
  5. Step 5: Solve for x
    x = 586,483,715.91/21,270.62
  6. Step 6: Final answer
    x = 27,572.48

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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.