Home / 14,193.28-21,290.08-5,428.64

Finding the Fourth Proportional to 14,193.28, 21,290.08 and 5,428.64

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Solution

The fourth proportional to 14,193.28, 21,290.08 and 5,428.64 is: 8,143.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,193.28 : 21,290.08 = 5,428.64 : x
  2. Step 2: Convert to fraction form
    14,193.28/21,290.08 = 5,428.64/x
  3. Step 3: Cross multiply
    14,193.28x = 21,290.08 × 5,428.64
  4. Step 4: Simplify right side
    14,193.28x = 115,576,179.89
  5. Step 5: Solve for x
    x = 115,576,179.89/14,193.28
  6. Step 6: Final answer
    x = 8,143.02

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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.