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Finding the Fourth Proportional to 12,457.17, 17,190.81 and 6,868.17

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Solution

The fourth proportional to 12,457.17, 17,190.81 and 6,868.17 is: 9,478.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.17 : 17,190.81 = 6,868.17 : x
  2. Step 2: Convert to fraction form
    12,457.17/17,190.81 = 6,868.17/x
  3. Step 3: Cross multiply
    12,457.17x = 17,190.81 × 6,868.17
  4. Step 4: Simplify right side
    12,457.17x = 118,069,405.52
  5. Step 5: Solve for x
    x = 118,069,405.52/12,457.17
  6. Step 6: Final answer
    x = 9,478.03

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1.5x scale

Why These Related Problems?

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