Home / 30,812.16-42,521.03-18,065.68

Finding the Fourth Proportional to 30,812.16, 42,521.03 and 18,065.68

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Solution

The fourth proportional to 30,812.16, 42,521.03 and 18,065.68 is: 24,930.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,812.16 : 42,521.03 = 18,065.68 : x
  2. Step 2: Convert to fraction form
    30,812.16/42,521.03 = 18,065.68/x
  3. Step 3: Cross multiply
    30,812.16x = 42,521.03 × 18,065.68
  4. Step 4: Simplify right side
    30,812.16x = 768,171,124.62
  5. Step 5: Solve for x
    x = 768,171,124.62/30,812.16
  6. Step 6: Final answer
    x = 24,930.78

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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.