Home / 20,071.10-27,698.08-11,118.58

Finding the Fourth Proportional to 20,071.10, 27,698.08 and 11,118.58

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Solution

The fourth proportional to 20,071.10, 27,698.08 and 11,118.58 is: 15,343.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.10 : 27,698.08 = 11,118.58 : x
  2. Step 2: Convert to fraction form
    20,071.10/27,698.08 = 11,118.58/x
  3. Step 3: Cross multiply
    20,071.10x = 27,698.08 × 11,118.58
  4. Step 4: Simplify right side
    20,071.10x = 307,963,318.33
  5. Step 5: Solve for x
    x = 307,963,318.33/20,071.10
  6. Step 6: Final answer
    x = 15,343.62

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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.