Home / 30,812.12-42,521.03-18,072.84

Finding the Fourth Proportional to 30,812.12, 42,521.03 and 18,072.84

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Solution

The fourth proportional to 30,812.12, 42,521.03 and 18,072.84 is: 24,940.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,812.12 : 42,521.03 = 18,072.84 : x
  2. Step 2: Convert to fraction form
    30,812.12/42,521.03 = 18,072.84/x
  3. Step 3: Cross multiply
    30,812.12x = 42,521.03 × 18,072.84
  4. Step 4: Simplify right side
    30,812.12x = 768,475,771.83
  5. Step 5: Solve for x
    x = 768,475,771.83/30,812.12
  6. Step 6: Final answer
    x = 24,940.70

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1.5x scale

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.