Home / 21,478.08-29,639.64-12,046.64

Finding the Fourth Proportional to 21,478.08, 29,639.64 and 12,046.64

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Solution

The fourth proportional to 21,478.08, 29,639.64 and 12,046.64 is: 16,624.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.08 : 29,639.64 = 12,046.64 : x
  2. Step 2: Convert to fraction form
    21,478.08/29,639.64 = 12,046.64/x
  3. Step 3: Cross multiply
    21,478.08x = 29,639.64 × 12,046.64
  4. Step 4: Simplify right side
    21,478.08x = 357,058,072.81
  5. Step 5: Solve for x
    x = 357,058,072.81/21,478.08
  6. Step 6: Final answer
    x = 16,624.30

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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.