Home / 20,586.88-28,395.44-12,632.96

Finding the Fourth Proportional to 20,586.88, 28,395.44 and 12,632.96

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Solution

The fourth proportional to 20,586.88, 28,395.44 and 12,632.96 is: 17,424.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.88 : 28,395.44 = 12,632.96 : x
  2. Step 2: Convert to fraction form
    20,586.88/28,395.44 = 12,632.96/x
  3. Step 3: Cross multiply
    20,586.88x = 28,395.44 × 12,632.96
  4. Step 4: Simplify right side
    20,586.88x = 358,718,457.70
  5. Step 5: Solve for x
    x = 358,718,457.70/20,586.88
  6. Step 6: Final answer
    x = 17,424.61

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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.