Home / 21,912.63-32,861.50-7,117.88

Finding the Fourth Proportional to 21,912.63, 32,861.50 and 7,117.88

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Solution

The fourth proportional to 21,912.63, 32,861.50 and 7,117.88 is: 10,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.63 : 32,861.50 = 7,117.88 : x
  2. Step 2: Convert to fraction form
    21,912.63/32,861.50 = 7,117.88/x
  3. Step 3: Cross multiply
    21,912.63x = 32,861.50 × 7,117.88
  4. Step 4: Simplify right side
    21,912.63x = 233,904,031.52
  5. Step 5: Solve for x
    x = 233,904,031.52/21,912.63
  6. Step 6: Final answer
    x = 10,674.40

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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.