Home / 30,630.66-42,277.60-18,704.01

Finding the Fourth Proportional to 30,630.66, 42,277.60 and 18,704.01

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Solution

The fourth proportional to 30,630.66, 42,277.60 and 18,704.01 is: 25,815.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,630.66 : 42,277.60 = 18,704.01 : x
  2. Step 2: Convert to fraction form
    30,630.66/42,277.60 = 18,704.01/x
  3. Step 3: Cross multiply
    30,630.66x = 42,277.60 × 18,704.01
  4. Step 4: Simplify right side
    30,630.66x = 790,760,729.89
  5. Step 5: Solve for x
    x = 790,760,729.89/30,630.66
  6. Step 6: Final answer
    x = 25,815.99

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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.