Home / 22,009.84-30,343.20-21,320.56

Finding the Fourth Proportional to 22,009.84, 30,343.20 and 21,320.56

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Solution

The fourth proportional to 22,009.84, 30,343.20 and 21,320.56 is: 29,392.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,009.84 : 30,343.20 = 21,320.56 : x
  2. Step 2: Convert to fraction form
    22,009.84/30,343.20 = 21,320.56/x
  3. Step 3: Cross multiply
    22,009.84x = 30,343.20 × 21,320.56
  4. Step 4: Simplify right side
    22,009.84x = 646,934,016.19
  5. Step 5: Solve for x
    x = 646,934,016.19/22,009.84
  6. Step 6: Final answer
    x = 29,392.94

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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.