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Finding the Fourth Proportional to 13,374.32, 18,451.16 and 7,706.03

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Solution

The fourth proportional to 13,374.32, 18,451.16 and 7,706.03 is: 10,631.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,374.32 : 18,451.16 = 7,706.03 : x
  2. Step 2: Convert to fraction form
    13,374.32/18,451.16 = 7,706.03/x
  3. Step 3: Cross multiply
    13,374.32x = 18,451.16 × 7,706.03
  4. Step 4: Simplify right side
    13,374.32x = 142,185,192.49
  5. Step 5: Solve for x
    x = 142,185,192.49/13,374.32
  6. Step 6: Final answer
    x = 10,631.21

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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.