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Finding the Fourth Proportional to 35,904.40, 53,858.20 and 13,728.40

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Solution

The fourth proportional to 35,904.40, 53,858.20 and 13,728.40 is: 20,593.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,904.40 : 53,858.20 = 13,728.40 : x
  2. Step 2: Convert to fraction form
    35,904.40/53,858.20 = 13,728.40/x
  3. Step 3: Cross multiply
    35,904.40x = 53,858.20 × 13,728.40
  4. Step 4: Simplify right side
    35,904.40x = 739,386,912.88
  5. Step 5: Solve for x
    x = 739,386,912.88/35,904.40
  6. Step 6: Final answer
    x = 20,593.21

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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.