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Finding the Fourth Proportional to 37,891.99, 56,830.31 and 12,918.50

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Solution

The fourth proportional to 37,891.99, 56,830.31 and 12,918.50 is: 19,375.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,891.99 : 56,830.31 = 12,918.50 : x
  2. Step 2: Convert to fraction form
    37,891.99/56,830.31 = 12,918.50/x
  3. Step 3: Cross multiply
    37,891.99x = 56,830.31 × 12,918.50
  4. Step 4: Simplify right side
    37,891.99x = 734,162,359.74
  5. Step 5: Solve for x
    x = 734,162,359.74/37,891.99
  6. Step 6: Final answer
    x = 19,375.13

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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.