Home / 21,313.57-29,412.70-11,753.62

Finding the Fourth Proportional to 21,313.57, 29,412.70 and 11,753.62

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Solution

The fourth proportional to 21,313.57, 29,412.70 and 11,753.62 is: 16,219.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.57 : 29,412.70 = 11,753.62 : x
  2. Step 2: Convert to fraction form
    21,313.57/29,412.70 = 11,753.62/x
  3. Step 3: Cross multiply
    21,313.57x = 29,412.70 × 11,753.62
  4. Step 4: Simplify right side
    21,313.57x = 345,705,698.97
  5. Step 5: Solve for x
    x = 345,705,698.97/21,313.57
  6. Step 6: Final answer
    x = 16,219.98

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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.