Home / 43,150.23-64,728.86-11,985.48

Finding the Fourth Proportional to 43,150.23, 64,728.86 and 11,985.48

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Solution

The fourth proportional to 43,150.23, 64,728.86 and 11,985.48 is: 17,979.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,150.23 : 64,728.86 = 11,985.48 : x
  2. Step 2: Convert to fraction form
    43,150.23/64,728.86 = 11,985.48/x
  3. Step 3: Cross multiply
    43,150.23x = 64,728.86 × 11,985.48
  4. Step 4: Simplify right side
    43,150.23x = 775,806,397.03
  5. Step 5: Solve for x
    x = 775,806,397.03/43,150.23
  6. Step 6: Final answer
    x = 17,979.19

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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.