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Finding the Fourth Proportional to 22,709.76, 34,011.79 and 21,921.53

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Solution

The fourth proportional to 22,709.76, 34,011.79 and 21,921.53 is: 32,831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,709.76 : 34,011.79 = 21,921.53 : x
  2. Step 2: Convert to fraction form
    22,709.76/34,011.79 = 21,921.53/x
  3. Step 3: Cross multiply
    22,709.76x = 34,011.79 × 21,921.53
  4. Step 4: Simplify right side
    22,709.76x = 745,590,474.84
  5. Step 5: Solve for x
    x = 745,590,474.84/22,709.76
  6. Step 6: Final answer
    x = 32,831.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.