Home / 20,995.10-28,971.07-12,927.46

Finding the Fourth Proportional to 20,995.10, 28,971.07 and 12,927.46

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Solution

The fourth proportional to 20,995.10, 28,971.07 and 12,927.46 is: 17,838.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.10 : 28,971.07 = 12,927.46 : x
  2. Step 2: Convert to fraction form
    20,995.10/28,971.07 = 12,927.46/x
  3. Step 3: Cross multiply
    20,995.10x = 28,971.07 × 12,927.46
  4. Step 4: Simplify right side
    20,995.10x = 374,522,283.94
  5. Step 5: Solve for x
    x = 374,522,283.94/20,995.10
  6. Step 6: Final answer
    x = 17,838.56

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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.