Home / 30,771.75-42,479.18-18,023.16

Finding the Fourth Proportional to 30,771.75, 42,479.18 and 18,023.16

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Solution

The fourth proportional to 30,771.75, 42,479.18 and 18,023.16 is: 24,880.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,771.75 : 42,479.18 = 18,023.16 : x
  2. Step 2: Convert to fraction form
    30,771.75/42,479.18 = 18,023.16/x
  3. Step 3: Cross multiply
    30,771.75x = 42,479.18 × 18,023.16
  4. Step 4: Simplify right side
    30,771.75x = 765,608,967.69
  5. Step 5: Solve for x
    x = 765,608,967.69/30,771.75
  6. Step 6: Final answer
    x = 24,880.25

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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.