Home / 28,719.45-43,079.19-8,999.54

Finding the Fourth Proportional to 28,719.45, 43,079.19 and 8,999.54

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Solution

The fourth proportional to 28,719.45, 43,079.19 and 8,999.54 is: 13,499.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.45 : 43,079.19 = 8,999.54 : x
  2. Step 2: Convert to fraction form
    28,719.45/43,079.19 = 8,999.54/x
  3. Step 3: Cross multiply
    28,719.45x = 43,079.19 × 8,999.54
  4. Step 4: Simplify right side
    28,719.45x = 387,693,038.34
  5. Step 5: Solve for x
    x = 387,693,038.34/28,719.45
  6. Step 6: Final answer
    x = 13,499.32

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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.