Home / 14,004.70-21,007.05-12,838.30

Finding the Fourth Proportional to 14,004.70, 21,007.05 and 12,838.30

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Solution

The fourth proportional to 14,004.70, 21,007.05 and 12,838.30 is: 19,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,004.70 : 21,007.05 = 12,838.30 : x
  2. Step 2: Convert to fraction form
    14,004.70/21,007.05 = 12,838.30/x
  3. Step 3: Cross multiply
    14,004.70x = 21,007.05 × 12,838.30
  4. Step 4: Simplify right side
    14,004.70x = 269,694,810.02
  5. Step 5: Solve for x
    x = 269,694,810.02/14,004.70
  6. Step 6: Final answer
    x = 19,257.45

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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.