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Finding the Fourth Proportional to 15,777.98, 21,770.93 and 9,063.89

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Solution

The fourth proportional to 15,777.98, 21,770.93 and 9,063.89 is: 12,506.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,777.98 : 21,770.93 = 9,063.89 : x
  2. Step 2: Convert to fraction form
    15,777.98/21,770.93 = 9,063.89/x
  3. Step 3: Cross multiply
    15,777.98x = 21,770.93 × 9,063.89
  4. Step 4: Simplify right side
    15,777.98x = 197,329,160.54
  5. Step 5: Solve for x
    x = 197,329,160.54/15,777.98
  6. Step 6: Final answer
    x = 12,506.62

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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.