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Finding the Fourth Proportional to 16,392.18, 22,619.07 and 9,318.45

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Solution

The fourth proportional to 16,392.18, 22,619.07 and 9,318.45 is: 12,858.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,392.18 : 22,619.07 = 9,318.45 : x
  2. Step 2: Convert to fraction form
    16,392.18/22,619.07 = 9,318.45/x
  3. Step 3: Cross multiply
    16,392.18x = 22,619.07 × 9,318.45
  4. Step 4: Simplify right side
    16,392.18x = 210,774,672.84
  5. Step 5: Solve for x
    x = 210,774,672.84/16,392.18
  6. Step 6: Final answer
    x = 12,858.25

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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.