Home / 45,288.63-67,911.09-18,986.31

Finding the Fourth Proportional to 45,288.63, 67,911.09 and 18,986.31

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Solution

The fourth proportional to 45,288.63, 67,911.09 and 18,986.31 is: 28,470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,288.63 : 67,911.09 = 18,986.31 : x
  2. Step 2: Convert to fraction form
    45,288.63/67,911.09 = 18,986.31/x
  3. Step 3: Cross multiply
    45,288.63x = 67,911.09 × 18,986.31
  4. Step 4: Simplify right side
    45,288.63x = 1,289,381,007.18
  5. Step 5: Solve for x
    x = 1,289,381,007.18/45,288.63
  6. Step 6: Final answer
    x = 28,470.30

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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.