Home / 12,457.49-17,190.55-7,148.57

Finding the Fourth Proportional to 12,457.49, 17,190.55 and 7,148.57

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Solution

The fourth proportional to 12,457.49, 17,190.55 and 7,148.57 is: 9,864.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.49 : 17,190.55 = 7,148.57 : x
  2. Step 2: Convert to fraction form
    12,457.49/17,190.55 = 7,148.57/x
  3. Step 3: Cross multiply
    12,457.49x = 17,190.55 × 7,148.57
  4. Step 4: Simplify right side
    12,457.49x = 122,887,850.01
  5. Step 5: Solve for x
    x = 122,887,850.01/12,457.49
  6. Step 6: Final answer
    x = 9,864.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.