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Finding the Fourth Proportional to 12,674.40, 17,490.09 and 7,368.81

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Solution

The fourth proportional to 12,674.40, 17,490.09 and 7,368.81 is: 10,168.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,674.40 : 17,490.09 = 7,368.81 : x
  2. Step 2: Convert to fraction form
    12,674.40/17,490.09 = 7,368.81/x
  3. Step 3: Cross multiply
    12,674.40x = 17,490.09 × 7,368.81
  4. Step 4: Simplify right side
    12,674.40x = 128,881,150.09
  5. Step 5: Solve for x
    x = 128,881,150.09/12,674.40
  6. Step 6: Final answer
    x = 10,168.62

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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.