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Finding the Fourth Proportional to 28,266.70, 42,411.03 and 12,673.30

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Solution

The fourth proportional to 28,266.70, 42,411.03 and 12,673.30 is: 19,014.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,266.70 : 42,411.03 = 12,673.30 : x
  2. Step 2: Convert to fraction form
    28,266.70/42,411.03 = 12,673.30/x
  3. Step 3: Cross multiply
    28,266.70x = 42,411.03 × 12,673.30
  4. Step 4: Simplify right side
    28,266.70x = 537,487,706.50
  5. Step 5: Solve for x
    x = 537,487,706.50/28,266.70
  6. Step 6: Final answer
    x = 19,014.87

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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.