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Finding the Fourth Proportional to 43,888.36, 65,842.42 and 13,904.40

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Solution

The fourth proportional to 43,888.36, 65,842.42 and 13,904.40 is: 20,859.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,888.36 : 65,842.42 = 13,904.40 : x
  2. Step 2: Convert to fraction form
    43,888.36/65,842.42 = 13,904.40/x
  3. Step 3: Cross multiply
    43,888.36x = 65,842.42 × 13,904.40
  4. Step 4: Simplify right side
    43,888.36x = 915,499,344.65
  5. Step 5: Solve for x
    x = 915,499,344.65/43,888.36
  6. Step 6: Final answer
    x = 20,859.73

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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.