Home / 14,128.40-21,214.20-10,845.20

Finding the Fourth Proportional to 14,128.40, 21,214.20 and 10,845.20

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Solution

The fourth proportional to 14,128.40, 21,214.20 and 10,845.20 is: 16,284.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.40 : 21,214.20 = 10,845.20 : x
  2. Step 2: Convert to fraction form
    14,128.40/21,214.20 = 10,845.20/x
  3. Step 3: Cross multiply
    14,128.40x = 21,214.20 × 10,845.20
  4. Step 4: Simplify right side
    14,128.40x = 230,072,241.84
  5. Step 5: Solve for x
    x = 230,072,241.84/14,128.40
  6. Step 6: Final answer
    x = 16,284.38

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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.