Home / 28,718.93-43,078.40-8,999.03

Finding the Fourth Proportional to 28,718.93, 43,078.40 and 8,999.03

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Solution

The fourth proportional to 28,718.93, 43,078.40 and 8,999.03 is: 13,498.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.93 : 43,078.40 = 8,999.03 : x
  2. Step 2: Convert to fraction form
    28,718.93/43,078.40 = 8,999.03/x
  3. Step 3: Cross multiply
    28,718.93x = 43,078.40 × 8,999.03
  4. Step 4: Simplify right side
    28,718.93x = 387,663,621.06
  5. Step 5: Solve for x
    x = 387,663,621.06/28,718.93
  6. Step 6: Final answer
    x = 13,498.54

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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.