Home / 28,563.81-39,412.56-18,490.83

Finding the Fourth Proportional to 28,563.81, 39,412.56 and 18,490.83

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Solution

The fourth proportional to 28,563.81, 39,412.56 and 18,490.83 is: 25,513.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.81 : 39,412.56 = 18,490.83 : x
  2. Step 2: Convert to fraction form
    28,563.81/39,412.56 = 18,490.83/x
  3. Step 3: Cross multiply
    28,563.81x = 39,412.56 × 18,490.83
  4. Step 4: Simplify right side
    28,563.81x = 728,770,946.82
  5. Step 5: Solve for x
    x = 728,770,946.82/28,563.81
  6. Step 6: Final answer
    x = 25,513.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.