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Finding the Fourth Proportional to 21,847.92, 30,133.08 and 15,136.08

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Solution

The fourth proportional to 21,847.92, 30,133.08 and 15,136.08 is: 20,875.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,847.92 : 30,133.08 = 15,136.08 : x
  2. Step 2: Convert to fraction form
    21,847.92/30,133.08 = 15,136.08/x
  3. Step 3: Cross multiply
    21,847.92x = 30,133.08 × 15,136.08
  4. Step 4: Simplify right side
    21,847.92x = 456,096,709.53
  5. Step 5: Solve for x
    x = 456,096,709.53/21,847.92
  6. Step 6: Final answer
    x = 20,875.98

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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.