Home / 19,211.49-28,780.18-10,865.96

Finding the Fourth Proportional to 19,211.49, 28,780.18 and 10,865.96

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Solution

The fourth proportional to 19,211.49, 28,780.18 and 10,865.96 is: 16,277.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.49 : 28,780.18 = 10,865.96 : x
  2. Step 2: Convert to fraction form
    19,211.49/28,780.18 = 10,865.96/x
  3. Step 3: Cross multiply
    19,211.49x = 28,780.18 × 10,865.96
  4. Step 4: Simplify right side
    19,211.49x = 312,724,221.53
  5. Step 5: Solve for x
    x = 312,724,221.53/19,211.49
  6. Step 6: Final answer
    x = 16,277.98

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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.