Home / 30,935.25-42,701.72-18,360

Finding the Fourth Proportional to 30,935.25, 42,701.72 and 18,360

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Solution

The fourth proportional to 30,935.25, 42,701.72 and 18,360 is: 25,343.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.25 : 42,701.72 = 18,360 : x
  2. Step 2: Convert to fraction form
    30,935.25/42,701.72 = 18,360/x
  3. Step 3: Cross multiply
    30,935.25x = 42,701.72 × 18,360
  4. Step 4: Simplify right side
    30,935.25x = 784,003,487.40
  5. Step 5: Solve for x
    x = 784,003,487.40/30,935.25
  6. Step 6: Final answer
    x = 25,343.37

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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.