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Finding the Fourth Proportional to 28,993.80, 43,501.07 and 17,887.58

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Solution

The fourth proportional to 28,993.80, 43,501.07 and 17,887.58 is: 26,837.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993.80 : 43,501.07 = 17,887.58 : x
  2. Step 2: Convert to fraction form
    28,993.80/43,501.07 = 17,887.58/x
  3. Step 3: Cross multiply
    28,993.80x = 43,501.07 × 17,887.58
  4. Step 4: Simplify right side
    28,993.80x = 778,128,869.71
  5. Step 5: Solve for x
    x = 778,128,869.71/28,993.80
  6. Step 6: Final answer
    x = 26,837.77

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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.