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Finding the Fourth Proportional to 18,885.19, 28,328.43 and 5,737.54

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Solution

The fourth proportional to 18,885.19, 28,328.43 and 5,737.54 is: 8,606.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.19 : 28,328.43 = 5,737.54 : x
  2. Step 2: Convert to fraction form
    18,885.19/28,328.43 = 5,737.54/x
  3. Step 3: Cross multiply
    18,885.19x = 28,328.43 × 5,737.54
  4. Step 4: Simplify right side
    18,885.19x = 162,535,500.26
  5. Step 5: Solve for x
    x = 162,535,500.26/18,885.19
  6. Step 6: Final answer
    x = 8,606.51

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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.