Home / 12,995.43-19,459.92-7,145.61

Finding the Fourth Proportional to 12,995.43, 19,459.92 and 7,145.61

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Solution

The fourth proportional to 12,995.43, 19,459.92 and 7,145.61 is: 10,700.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,995.43 : 19,459.92 = 7,145.61 : x
  2. Step 2: Convert to fraction form
    12,995.43/19,459.92 = 7,145.61/x
  3. Step 3: Cross multiply
    12,995.43x = 19,459.92 × 7,145.61
  4. Step 4: Simplify right side
    12,995.43x = 139,052,998.95
  5. Step 5: Solve for x
    x = 139,052,998.95/12,995.43
  6. Step 6: Final answer
    x = 10,700.15

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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.