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Finding the Fourth Proportional to 28,998.88, 43,439.76 and 19,113.76

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Solution

The fourth proportional to 28,998.88, 43,439.76 and 19,113.76 is: 28,632.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,998.88 : 43,439.76 = 19,113.76 : x
  2. Step 2: Convert to fraction form
    28,998.88/43,439.76 = 19,113.76/x
  3. Step 3: Cross multiply
    28,998.88x = 43,439.76 × 19,113.76
  4. Step 4: Simplify right side
    28,998.88x = 830,297,147.10
  5. Step 5: Solve for x
    x = 830,297,147.10/28,998.88
  6. Step 6: Final answer
    x = 28,632.04

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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.