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Finding the Fourth Proportional to 21,271.56, 31,885.56 and 9,592.98

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Solution

The fourth proportional to 21,271.56, 31,885.56 and 9,592.98 is: 14,379.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.56 : 31,885.56 = 9,592.98 : x
  2. Step 2: Convert to fraction form
    21,271.56/31,885.56 = 9,592.98/x
  3. Step 3: Cross multiply
    21,271.56x = 31,885.56 × 9,592.98
  4. Step 4: Simplify right side
    21,271.56x = 305,877,539.37
  5. Step 5: Solve for x
    x = 305,877,539.37/21,271.56
  6. Step 6: Final answer
    x = 14,379.65

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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.