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Finding the Fourth Proportional to 18,692.95, 28,039.53 and 5,545.42

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Solution

The fourth proportional to 18,692.95, 28,039.53 and 5,545.42 is: 8,318.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.95 : 28,039.53 = 5,545.42 : x
  2. Step 2: Convert to fraction form
    18,692.95/28,039.53 = 5,545.42/x
  3. Step 3: Cross multiply
    18,692.95x = 28,039.53 × 5,545.42
  4. Step 4: Simplify right side
    18,692.95x = 155,490,970.45
  5. Step 5: Solve for x
    x = 155,490,970.45/18,692.95
  6. Step 6: Final answer
    x = 8,318.16

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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.