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Finding the Fourth Proportional to 12,737.40, 19,127.70 and 12,348.60

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Solution

The fourth proportional to 12,737.40, 19,127.70 and 12,348.60 is: 18,543.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,737.40 : 19,127.70 = 12,348.60 : x
  2. Step 2: Convert to fraction form
    12,737.40/19,127.70 = 12,348.60/x
  3. Step 3: Cross multiply
    12,737.40x = 19,127.70 × 12,348.60
  4. Step 4: Simplify right side
    12,737.40x = 236,200,316.22
  5. Step 5: Solve for x
    x = 236,200,316.22/12,737.40
  6. Step 6: Final answer
    x = 18,543.84

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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.