Home / 14,340.36-21,490.74-12,778.68

Finding the Fourth Proportional to 14,340.36, 21,490.74 and 12,778.68

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Solution

The fourth proportional to 14,340.36, 21,490.74 and 12,778.68 is: 19,150.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,340.36 : 21,490.74 = 12,778.68 : x
  2. Step 2: Convert to fraction form
    14,340.36/21,490.74 = 12,778.68/x
  3. Step 3: Cross multiply
    14,340.36x = 21,490.74 × 12,778.68
  4. Step 4: Simplify right side
    14,340.36x = 274,623,289.42
  5. Step 5: Solve for x
    x = 274,623,289.42/14,340.36
  6. Step 6: Final answer
    x = 19,150.38

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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.