Home / 30,964.59-42,742.04-18,389.25

Finding the Fourth Proportional to 30,964.59, 42,742.04 and 18,389.25

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Solution

The fourth proportional to 30,964.59, 42,742.04 and 18,389.25 is: 25,383.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,964.59 : 42,742.04 = 18,389.25 : x
  2. Step 2: Convert to fraction form
    30,964.59/42,742.04 = 18,389.25/x
  3. Step 3: Cross multiply
    30,964.59x = 42,742.04 × 18,389.25
  4. Step 4: Simplify right side
    30,964.59x = 785,993,967.12
  5. Step 5: Solve for x
    x = 785,993,967.12/30,964.59
  6. Step 6: Final answer
    x = 25,383.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.