Home / 19,178.72-28,772.01-8,085.43

Finding the Fourth Proportional to 19,178.72, 28,772.01 and 8,085.43

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Solution

The fourth proportional to 19,178.72, 28,772.01 and 8,085.43 is: 12,129.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,178.72 : 28,772.01 = 8,085.43 : x
  2. Step 2: Convert to fraction form
    19,178.72/28,772.01 = 8,085.43/x
  3. Step 3: Cross multiply
    19,178.72x = 28,772.01 × 8,085.43
  4. Step 4: Simplify right side
    19,178.72x = 232,634,108.78
  5. Step 5: Solve for x
    x = 232,634,108.78/19,178.72
  6. Step 6: Final answer
    x = 12,129.80

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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.