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Finding the Fourth Proportional to 17,640.04, 26,457 and 4,990.68

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Solution

The fourth proportional to 17,640.04, 26,457 and 4,990.68 is: 7,485.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,640.04 : 26,457 = 4,990.68 : x
  2. Step 2: Convert to fraction form
    17,640.04/26,457 = 4,990.68/x
  3. Step 3: Cross multiply
    17,640.04x = 26,457 × 4,990.68
  4. Step 4: Simplify right side
    17,640.04x = 132,038,420.76
  5. Step 5: Solve for x
    x = 132,038,420.76/17,640.04
  6. Step 6: Final answer
    x = 7,485.15

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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.