Home / 19,487.61-26,874.96-12,770.79

Finding the Fourth Proportional to 19,487.61, 26,874.96 and 12,770.79

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Solution

The fourth proportional to 19,487.61, 26,874.96 and 12,770.79 is: 17,611.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,487.61 : 26,874.96 = 12,770.79 : x
  2. Step 2: Convert to fraction form
    19,487.61/26,874.96 = 12,770.79/x
  3. Step 3: Cross multiply
    19,487.61x = 26,874.96 × 12,770.79
  4. Step 4: Simplify right side
    19,487.61x = 343,214,473.75
  5. Step 5: Solve for x
    x = 343,214,473.75/19,487.61
  6. Step 6: Final answer
    x = 17,611.94

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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.