Home / 22,631.42-31,245.44-21,219.28

Finding the Fourth Proportional to 22,631.42, 31,245.44 and 21,219.28

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Solution

The fourth proportional to 22,631.42, 31,245.44 and 21,219.28 is: 29,295.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,631.42 : 31,245.44 = 21,219.28 : x
  2. Step 2: Convert to fraction form
    22,631.42/31,245.44 = 21,219.28/x
  3. Step 3: Cross multiply
    22,631.42x = 31,245.44 × 21,219.28
  4. Step 4: Simplify right side
    22,631.42x = 663,005,792.40
  5. Step 5: Solve for x
    x = 663,005,792.40/22,631.42
  6. Step 6: Final answer
    x = 29,295.82

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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.