Home / 30,990.60-42,771.78-17,563.23

Finding the Fourth Proportional to 30,990.60, 42,771.78 and 17,563.23

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Solution

The fourth proportional to 30,990.60, 42,771.78 and 17,563.23 is: 24,239.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.60 : 42,771.78 = 17,563.23 : x
  2. Step 2: Convert to fraction form
    30,990.60/42,771.78 = 17,563.23/x
  3. Step 3: Cross multiply
    30,990.60x = 42,771.78 × 17,563.23
  4. Step 4: Simplify right side
    30,990.60x = 751,210,609.65
  5. Step 5: Solve for x
    x = 751,210,609.65/30,990.60
  6. Step 6: Final answer
    x = 24,239.95

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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.