Home / 29,290.09-40,420.36-15,861.36

Finding the Fourth Proportional to 29,290.09, 40,420.36 and 15,861.36

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Solution

The fourth proportional to 29,290.09, 40,420.36 and 15,861.36 is: 21,888.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,290.09 : 40,420.36 = 15,861.36 : x
  2. Step 2: Convert to fraction form
    29,290.09/40,420.36 = 15,861.36/x
  3. Step 3: Cross multiply
    29,290.09x = 40,420.36 × 15,861.36
  4. Step 4: Simplify right side
    29,290.09x = 641,122,052.69
  5. Step 5: Solve for x
    x = 641,122,052.69/29,290.09
  6. Step 6: Final answer
    x = 21,888.70

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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.