Home / 12,709.12-19,064.29-6,140.83

Finding the Fourth Proportional to 12,709.12, 19,064.29 and 6,140.83

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Solution

The fourth proportional to 12,709.12, 19,064.29 and 6,140.83 is: 9,211.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.12 : 19,064.29 = 6,140.83 : x
  2. Step 2: Convert to fraction form
    12,709.12/19,064.29 = 6,140.83/x
  3. Step 3: Cross multiply
    12,709.12x = 19,064.29 × 6,140.83
  4. Step 4: Simplify right side
    12,709.12x = 117,070,563.96
  5. Step 5: Solve for x
    x = 117,070,563.96/12,709.12
  6. Step 6: Final answer
    x = 9,211.54

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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.