Home / 14,128.60-21,198.30-13,907.20

Finding the Fourth Proportional to 14,128.60, 21,198.30 and 13,907.20

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Solution

The fourth proportional to 14,128.60, 21,198.30 and 13,907.20 is: 20,866.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.60 : 21,198.30 = 13,907.20 : x
  2. Step 2: Convert to fraction form
    14,128.60/21,198.30 = 13,907.20/x
  3. Step 3: Cross multiply
    14,128.60x = 21,198.30 × 13,907.20
  4. Step 4: Simplify right side
    14,128.60x = 294,808,997.76
  5. Step 5: Solve for x
    x = 294,808,997.76/14,128.60
  6. Step 6: Final answer
    x = 20,866.12

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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.