Home / 20,071.77-27,700.61-11,120.10

Finding the Fourth Proportional to 20,071.77, 27,700.61 and 11,120.10

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Solution

The fourth proportional to 20,071.77, 27,700.61 and 11,120.10 is: 15,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.77 : 27,700.61 = 11,120.10 : x
  2. Step 2: Convert to fraction form
    20,071.77/27,700.61 = 11,120.10/x
  3. Step 3: Cross multiply
    20,071.77x = 27,700.61 × 11,120.10
  4. Step 4: Simplify right side
    20,071.77x = 308,033,497.66
  5. Step 5: Solve for x
    x = 308,033,497.66/20,071.77
  6. Step 6: Final answer
    x = 15,346.60

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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.