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Finding the Fourth Proportional to 19,959.51, 29,939.40 and 9,539.67

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Solution

The fourth proportional to 19,959.51, 29,939.40 and 9,539.67 is: 14,309.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.51 : 29,939.40 = 9,539.67 : x
  2. Step 2: Convert to fraction form
    19,959.51/29,939.40 = 9,539.67/x
  3. Step 3: Cross multiply
    19,959.51x = 29,939.40 × 9,539.67
  4. Step 4: Simplify right side
    19,959.51x = 285,611,996.00
  5. Step 5: Solve for x
    x = 285,611,996.00/19,959.51
  6. Step 6: Final answer
    x = 14,309.57

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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.