Home / 20,300.63-28,017.29-11,917.13

Finding the Fourth Proportional to 20,300.63, 28,017.29 and 11,917.13

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Solution

The fourth proportional to 20,300.63, 28,017.29 and 11,917.13 is: 16,447.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.63 : 28,017.29 = 11,917.13 : x
  2. Step 2: Convert to fraction form
    20,300.63/28,017.29 = 11,917.13/x
  3. Step 3: Cross multiply
    20,300.63x = 28,017.29 × 11,917.13
  4. Step 4: Simplify right side
    20,300.63x = 333,885,576.88
  5. Step 5: Solve for x
    x = 333,885,576.88/20,300.63
  6. Step 6: Final answer
    x = 16,447.06

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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.