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Finding the Fourth Proportional to 26,457.04, 39,687.48 and 7,990.48

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Solution

The fourth proportional to 26,457.04, 39,687.48 and 7,990.48 is: 11,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,457.04 : 39,687.48 = 7,990.48 : x
  2. Step 2: Convert to fraction form
    26,457.04/39,687.48 = 7,990.48/x
  3. Step 3: Cross multiply
    26,457.04x = 39,687.48 × 7,990.48
  4. Step 4: Simplify right side
    26,457.04x = 317,122,015.19
  5. Step 5: Solve for x
    x = 317,122,015.19/26,457.04
  6. Step 6: Final answer
    x = 11,986.30

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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.