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Finding the Fourth Proportional to 30,588.51, 45,843.89 and 13,957.59

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Solution

The fourth proportional to 30,588.51, 45,843.89 and 13,957.59 is: 20,918.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,588.51 : 45,843.89 = 13,957.59 : x
  2. Step 2: Convert to fraction form
    30,588.51/45,843.89 = 13,957.59/x
  3. Step 3: Cross multiply
    30,588.51x = 45,843.89 × 13,957.59
  4. Step 4: Simplify right side
    30,588.51x = 639,870,150.84
  5. Step 5: Solve for x
    x = 639,870,150.84/30,588.51
  6. Step 6: Final answer
    x = 20,918.64

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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.