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Finding the Fourth Proportional to 12,737.40, 18,835.80 and 12,737.40

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Solution

The fourth proportional to 12,737.40, 18,835.80 and 12,737.40 is: 18,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,737.40 : 18,835.80 = 12,737.40 : x
  2. Step 2: Convert to fraction form
    12,737.40/18,835.80 = 12,737.40/x
  3. Step 3: Cross multiply
    12,737.40x = 18,835.80 × 12,737.40
  4. Step 4: Simplify right side
    12,737.40x = 239,919,118.92
  5. Step 5: Solve for x
    x = 239,919,118.92/12,737.40
  6. Step 6: Final answer
    x = 18,835.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.