Home / 38,979.36-58,443.12-21,457.44

Finding the Fourth Proportional to 38,979.36, 58,443.12 and 21,457.44

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Solution

The fourth proportional to 38,979.36, 58,443.12 and 21,457.44 is: 32,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,979.36 : 58,443.12 = 21,457.44 : x
  2. Step 2: Convert to fraction form
    38,979.36/58,443.12 = 21,457.44/x
  3. Step 3: Cross multiply
    38,979.36x = 58,443.12 × 21,457.44
  4. Step 4: Simplify right side
    38,979.36x = 1,254,039,740.81
  5. Step 5: Solve for x
    x = 1,254,039,740.81/38,979.36
  6. Step 6: Final answer
    x = 32,171.89

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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.