Home / 21,599.49-29,802.08-12,168.05

Finding the Fourth Proportional to 21,599.49, 29,802.08 and 12,168.05

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Solution

The fourth proportional to 21,599.49, 29,802.08 and 12,168.05 is: 16,788.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,599.49 : 29,802.08 = 12,168.05 : x
  2. Step 2: Convert to fraction form
    21,599.49/29,802.08 = 12,168.05/x
  3. Step 3: Cross multiply
    21,599.49x = 29,802.08 × 12,168.05
  4. Step 4: Simplify right side
    21,599.49x = 362,633,138.70
  5. Step 5: Solve for x
    x = 362,633,138.70/21,599.49
  6. Step 6: Final answer
    x = 16,788.97

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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.