Home / 20,995.50-28,971.27-12,042.54

Finding the Fourth Proportional to 20,995.50, 28,971.27 and 12,042.54

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Solution

The fourth proportional to 20,995.50, 28,971.27 and 12,042.54 is: 16,617.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.50 : 28,971.27 = 12,042.54 : x
  2. Step 2: Convert to fraction form
    20,995.50/28,971.27 = 12,042.54/x
  3. Step 3: Cross multiply
    20,995.50x = 28,971.27 × 12,042.54
  4. Step 4: Simplify right side
    20,995.50x = 348,887,677.83
  5. Step 5: Solve for x
    x = 348,887,677.83/20,995.50
  6. Step 6: Final answer
    x = 16,617.26

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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.