Home / 37,945.20-56,912.40-12,986.40

Finding the Fourth Proportional to 37,945.20, 56,912.40 and 12,986.40

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Solution

The fourth proportional to 37,945.20, 56,912.40 and 12,986.40 is: 19,477.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,945.20 : 56,912.40 = 12,986.40 : x
  2. Step 2: Convert to fraction form
    37,945.20/56,912.40 = 12,986.40/x
  3. Step 3: Cross multiply
    37,945.20x = 56,912.40 × 12,986.40
  4. Step 4: Simplify right side
    37,945.20x = 739,087,191.36
  5. Step 5: Solve for x
    x = 739,087,191.36/37,945.20
  6. Step 6: Final answer
    x = 19,477.75

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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.