Home / 12,790.12-19,187.93-7,246.12

Finding the Fourth Proportional to 12,790.12, 19,187.93 and 7,246.12

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Solution

The fourth proportional to 12,790.12, 19,187.93 and 7,246.12 is: 10,870.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.12 : 19,187.93 = 7,246.12 : x
  2. Step 2: Convert to fraction form
    12,790.12/19,187.93 = 7,246.12/x
  3. Step 3: Cross multiply
    12,790.12x = 19,187.93 × 7,246.12
  4. Step 4: Simplify right side
    12,790.12x = 139,038,007.10
  5. Step 5: Solve for x
    x = 139,038,007.10/12,790.12
  6. Step 6: Final answer
    x = 10,870.74

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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.