Home / 20,070.96-27,698.71-11,118.28

Finding the Fourth Proportional to 20,070.96, 27,698.71 and 11,118.28

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Solution

The fourth proportional to 20,070.96, 27,698.71 and 11,118.28 is: 15,343.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.96 : 27,698.71 = 11,118.28 : x
  2. Step 2: Convert to fraction form
    20,070.96/27,698.71 = 11,118.28/x
  3. Step 3: Cross multiply
    20,070.96x = 27,698.71 × 11,118.28
  4. Step 4: Simplify right side
    20,070.96x = 307,962,013.42
  5. Step 5: Solve for x
    x = 307,962,013.42/20,070.96
  6. Step 6: Final answer
    x = 15,343.66

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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.