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Finding the Fourth Proportional to 43,998.40, 65,900.40 and 17,689.60

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Solution

The fourth proportional to 43,998.40, 65,900.40 and 17,689.60 is: 26,495.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,998.40 : 65,900.40 = 17,689.60 : x
  2. Step 2: Convert to fraction form
    43,998.40/65,900.40 = 17,689.60/x
  3. Step 3: Cross multiply
    43,998.40x = 65,900.40 × 17,689.60
  4. Step 4: Simplify right side
    43,998.40x = 1,165,751,715.84
  5. Step 5: Solve for x
    x = 1,165,751,715.84/43,998.40
  6. Step 6: Final answer
    x = 26,495.32

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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.