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Finding the Fourth Proportional to 18,482.90, 27,724.08 and 12,545.06

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Solution

The fourth proportional to 18,482.90, 27,724.08 and 12,545.06 is: 18,817.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,482.90 : 27,724.08 = 12,545.06 : x
  2. Step 2: Convert to fraction form
    18,482.90/27,724.08 = 12,545.06/x
  3. Step 3: Cross multiply
    18,482.90x = 27,724.08 × 12,545.06
  4. Step 4: Simplify right side
    18,482.90x = 347,800,247.04
  5. Step 5: Solve for x
    x = 347,800,247.04/18,482.90
  6. Step 6: Final answer
    x = 18,817.41

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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.