Home / 28,718.48-43,056.90-8,986.32

Finding the Fourth Proportional to 28,718.48, 43,056.90 and 8,986.32

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Solution

The fourth proportional to 28,718.48, 43,056.90 and 8,986.32 is: 13,472.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.48 : 43,056.90 = 8,986.32 : x
  2. Step 2: Convert to fraction form
    28,718.48/43,056.90 = 8,986.32/x
  3. Step 3: Cross multiply
    28,718.48x = 43,056.90 × 8,986.32
  4. Step 4: Simplify right side
    28,718.48x = 386,923,081.61
  5. Step 5: Solve for x
    x = 386,923,081.61/28,718.48
  6. Step 6: Final answer
    x = 13,472.97

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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.