Home / 18,878.56-28,317.84-5,731

Finding the Fourth Proportional to 18,878.56, 28,317.84 and 5,731

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Solution

The fourth proportional to 18,878.56, 28,317.84 and 5,731 is: 8,596.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.56 : 28,317.84 = 5,731 : x
  2. Step 2: Convert to fraction form
    18,878.56/28,317.84 = 5,731/x
  3. Step 3: Cross multiply
    18,878.56x = 28,317.84 × 5,731
  4. Step 4: Simplify right side
    18,878.56x = 162,289,541.04
  5. Step 5: Solve for x
    x = 162,289,541.04/18,878.56
  6. Step 6: Final answer
    x = 8,596.50

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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.