Home / 14,201.52-21,278.73-8,638.03

Finding the Fourth Proportional to 14,201.52, 21,278.73 and 8,638.03

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Solution

The fourth proportional to 14,201.52, 21,278.73 and 8,638.03 is: 12,942.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,201.52 : 21,278.73 = 8,638.03 : x
  2. Step 2: Convert to fraction form
    14,201.52/21,278.73 = 8,638.03/x
  3. Step 3: Cross multiply
    14,201.52x = 21,278.73 × 8,638.03
  4. Step 4: Simplify right side
    14,201.52x = 183,806,308.10
  5. Step 5: Solve for x
    x = 183,806,308.10/14,201.52
  6. Step 6: Final answer
    x = 12,942.72

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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.