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Finding the Fourth Proportional to 35,638.80, 53,458.20 and 9,346.20

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Solution

The fourth proportional to 35,638.80, 53,458.20 and 9,346.20 is: 14,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,638.80 : 53,458.20 = 9,346.20 : x
  2. Step 2: Convert to fraction form
    35,638.80/53,458.20 = 9,346.20/x
  3. Step 3: Cross multiply
    35,638.80x = 53,458.20 × 9,346.20
  4. Step 4: Simplify right side
    35,638.80x = 499,631,028.84
  5. Step 5: Solve for x
    x = 499,631,028.84/35,638.80
  6. Step 6: Final answer
    x = 14,019.30

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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.