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Finding the Fourth Proportional to 37,874.88, 56,813.04 and 12,920.64

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Solution

The fourth proportional to 37,874.88, 56,813.04 and 12,920.64 is: 19,381.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,874.88 : 56,813.04 = 12,920.64 : x
  2. Step 2: Convert to fraction form
    37,874.88/56,813.04 = 12,920.64/x
  3. Step 3: Cross multiply
    37,874.88x = 56,813.04 × 12,920.64
  4. Step 4: Simplify right side
    37,874.88x = 734,060,837.15
  5. Step 5: Solve for x
    x = 734,060,837.15/37,874.88
  6. Step 6: Final answer
    x = 19,381.21

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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.