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Finding the Fourth Proportional to 35,477.20, 53,190.20 and 19,899.60

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Solution

The fourth proportional to 35,477.20, 53,190.20 and 19,899.60 is: 29,835.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,477.20 : 53,190.20 = 19,899.60 : x
  2. Step 2: Convert to fraction form
    35,477.20/53,190.20 = 19,899.60/x
  3. Step 3: Cross multiply
    35,477.20x = 53,190.20 × 19,899.60
  4. Step 4: Simplify right side
    35,477.20x = 1,058,463,703.92
  5. Step 5: Solve for x
    x = 1,058,463,703.92/35,477.20
  6. Step 6: Final answer
    x = 29,835.04

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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.