Home / 12,912.08-17,814.60-7,605.20

Finding the Fourth Proportional to 12,912.08, 17,814.60 and 7,605.20

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Solution

The fourth proportional to 12,912.08, 17,814.60 and 7,605.20 is: 10,492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.08 : 17,814.60 = 7,605.20 : x
  2. Step 2: Convert to fraction form
    12,912.08/17,814.60 = 7,605.20/x
  3. Step 3: Cross multiply
    12,912.08x = 17,814.60 × 7,605.20
  4. Step 4: Simplify right side
    12,912.08x = 135,483,595.92
  5. Step 5: Solve for x
    x = 135,483,595.92/12,912.08
  6. Step 6: Final answer
    x = 10,492.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.