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Finding the Fourth Proportional to 21,358.84, 32,020.05 and 15,099.16

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Solution

The fourth proportional to 21,358.84, 32,020.05 and 15,099.16 is: 22,635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.84 : 32,020.05 = 15,099.16 : x
  2. Step 2: Convert to fraction form
    21,358.84/32,020.05 = 15,099.16/x
  3. Step 3: Cross multiply
    21,358.84x = 32,020.05 × 15,099.16
  4. Step 4: Simplify right side
    21,358.84x = 483,475,858.16
  5. Step 5: Solve for x
    x = 483,475,858.16/21,358.84
  6. Step 6: Final answer
    x = 22,635.87

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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.