Home / 49,927.20-74,890.80-12,991.20

Finding the Fourth Proportional to 49,927.20, 74,890.80 and 12,991.20

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Solution

The fourth proportional to 49,927.20, 74,890.80 and 12,991.20 is: 19,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,927.20 : 74,890.80 = 12,991.20 : x
  2. Step 2: Convert to fraction form
    49,927.20/74,890.80 = 12,991.20/x
  3. Step 3: Cross multiply
    49,927.20x = 74,890.80 × 12,991.20
  4. Step 4: Simplify right side
    49,927.20x = 972,921,360.96
  5. Step 5: Solve for x
    x = 972,921,360.96/49,927.20
  6. Step 6: Final answer
    x = 19,486.80

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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.