Home / 19,981.85-29,961.74-12,570.45

Finding the Fourth Proportional to 19,981.85, 29,961.74 and 12,570.45

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Solution

The fourth proportional to 19,981.85, 29,961.74 and 12,570.45 is: 18,848.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.85 : 29,961.74 = 12,570.45 : x
  2. Step 2: Convert to fraction form
    19,981.85/29,961.74 = 12,570.45/x
  3. Step 3: Cross multiply
    19,981.85x = 29,961.74 × 12,570.45
  4. Step 4: Simplify right side
    19,981.85x = 376,632,554.58
  5. Step 5: Solve for x
    x = 376,632,554.58/19,981.85
  6. Step 6: Final answer
    x = 18,848.73

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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.