Home / 14,331.36-21,440.88-12,669.12

Finding the Fourth Proportional to 14,331.36, 21,440.88 and 12,669.12

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Solution

The fourth proportional to 14,331.36, 21,440.88 and 12,669.12 is: 18,954.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,331.36 : 21,440.88 = 12,669.12 : x
  2. Step 2: Convert to fraction form
    14,331.36/21,440.88 = 12,669.12/x
  3. Step 3: Cross multiply
    14,331.36x = 21,440.88 × 12,669.12
  4. Step 4: Simplify right side
    14,331.36x = 271,637,081.63
  5. Step 5: Solve for x
    x = 271,637,081.63/14,331.36
  6. Step 6: Final answer
    x = 18,954.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.