Home / 12,528.35-18,791.87-4,208.43

Finding the Fourth Proportional to 12,528.35, 18,791.87 and 4,208.43

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Solution

The fourth proportional to 12,528.35, 18,791.87 and 4,208.43 is: 6,312.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.35 : 18,791.87 = 4,208.43 : x
  2. Step 2: Convert to fraction form
    12,528.35/18,791.87 = 4,208.43/x
  3. Step 3: Cross multiply
    12,528.35x = 18,791.87 × 4,208.43
  4. Step 4: Simplify right side
    12,528.35x = 79,084,248.42
  5. Step 5: Solve for x
    x = 79,084,248.42/12,528.35
  6. Step 6: Final answer
    x = 6,312.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.