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Finding the Fourth Proportional to 12,737.70, 19,106.55 and 12,057.30

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Solution

The fourth proportional to 12,737.70, 19,106.55 and 12,057.30 is: 18,085.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,737.70 : 19,106.55 = 12,057.30 : x
  2. Step 2: Convert to fraction form
    12,737.70/19,106.55 = 12,057.30/x
  3. Step 3: Cross multiply
    12,737.70x = 19,106.55 × 12,057.30
  4. Step 4: Simplify right side
    12,737.70x = 230,373,405.32
  5. Step 5: Solve for x
    x = 230,373,405.32/12,737.70
  6. Step 6: Final answer
    x = 18,085.95

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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.