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Finding the Fourth Proportional to 28,953.43, 43,430.50 and 7,894.51

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Solution

The fourth proportional to 28,953.43, 43,430.50 and 7,894.51 is: 11,841.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,953.43 : 43,430.50 = 7,894.51 : x
  2. Step 2: Convert to fraction form
    28,953.43/43,430.50 = 7,894.51/x
  3. Step 3: Cross multiply
    28,953.43x = 43,430.50 × 7,894.51
  4. Step 4: Simplify right side
    28,953.43x = 342,862,417.85
  5. Step 5: Solve for x
    x = 342,862,417.85/28,953.43
  6. Step 6: Final answer
    x = 11,841.86

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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.