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Finding the Fourth Proportional to 37,128.70, 55,687.65 and 10,830.70

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Solution

The fourth proportional to 37,128.70, 55,687.65 and 10,830.70 is: 16,244.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,128.70 : 55,687.65 = 10,830.70 : x
  2. Step 2: Convert to fraction form
    37,128.70/55,687.65 = 10,830.70/x
  3. Step 3: Cross multiply
    37,128.70x = 55,687.65 × 10,830.70
  4. Step 4: Simplify right side
    37,128.70x = 603,136,230.86
  5. Step 5: Solve for x
    x = 603,136,230.86/37,128.70
  6. Step 6: Final answer
    x = 16,244.47

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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.