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Finding the Fourth Proportional to 22,041.91, 30,420.62 and 13,659.67

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Solution

The fourth proportional to 22,041.91, 30,420.62 and 13,659.67 is: 18,852.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,041.91 : 30,420.62 = 13,659.67 : x
  2. Step 2: Convert to fraction form
    22,041.91/30,420.62 = 13,659.67/x
  3. Step 3: Cross multiply
    22,041.91x = 30,420.62 × 13,659.67
  4. Step 4: Simplify right side
    22,041.91x = 415,535,562.10
  5. Step 5: Solve for x
    x = 415,535,562.10/22,041.91
  6. Step 6: Final answer
    x = 18,852.07

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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.