Home / 20,825.23-28,731.94-12,330.17

Finding the Fourth Proportional to 20,825.23, 28,731.94 and 12,330.17

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Solution

The fourth proportional to 20,825.23, 28,731.94 and 12,330.17 is: 17,011.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.23 : 28,731.94 = 12,330.17 : x
  2. Step 2: Convert to fraction form
    20,825.23/28,731.94 = 12,330.17/x
  3. Step 3: Cross multiply
    20,825.23x = 28,731.94 × 12,330.17
  4. Step 4: Simplify right side
    20,825.23x = 354,269,834.19
  5. Step 5: Solve for x
    x = 354,269,834.19/20,825.23
  6. Step 6: Final answer
    x = 17,011.57

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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.