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Finding the Fourth Proportional to 21,908.47, 32,868.23 and 6,113.48

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Solution

The fourth proportional to 21,908.47, 32,868.23 and 6,113.48 is: 9,171.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.47 : 32,868.23 = 6,113.48 : x
  2. Step 2: Convert to fraction form
    21,908.47/32,868.23 = 6,113.48/x
  3. Step 3: Cross multiply
    21,908.47x = 32,868.23 × 6,113.48
  4. Step 4: Simplify right side
    21,908.47x = 200,939,341.27
  5. Step 5: Solve for x
    x = 200,939,341.27/21,908.47
  6. Step 6: Final answer
    x = 9,171.77

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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.