Home / 14,008.40-21,012.60-12,798.80

Finding the Fourth Proportional to 14,008.40, 21,012.60 and 12,798.80

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Solution

The fourth proportional to 14,008.40, 21,012.60 and 12,798.80 is: 19,198.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008.40 : 21,012.60 = 12,798.80 : x
  2. Step 2: Convert to fraction form
    14,008.40/21,012.60 = 12,798.80/x
  3. Step 3: Cross multiply
    14,008.40x = 21,012.60 × 12,798.80
  4. Step 4: Simplify right side
    14,008.40x = 268,936,064.88
  5. Step 5: Solve for x
    x = 268,936,064.88/14,008.40
  6. Step 6: Final answer
    x = 19,198.20

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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.