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Finding the Fourth Proportional to 23,313.40, 34,929.60 and 21,029.20

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Solution

The fourth proportional to 23,313.40, 34,929.60 and 21,029.20 is: 31,507.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,313.40 : 34,929.60 = 21,029.20 : x
  2. Step 2: Convert to fraction form
    23,313.40/34,929.60 = 21,029.20/x
  3. Step 3: Cross multiply
    23,313.40x = 34,929.60 × 21,029.20
  4. Step 4: Simplify right side
    23,313.40x = 734,541,544.32
  5. Step 5: Solve for x
    x = 734,541,544.32/23,313.40
  6. Step 6: Final answer
    x = 31,507.27

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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.