Home / 20,210.52-27,888.30-11,257.32

Finding the Fourth Proportional to 20,210.52, 27,888.30 and 11,257.32

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Solution

The fourth proportional to 20,210.52, 27,888.30 and 11,257.32 is: 15,533.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.52 : 27,888.30 = 11,257.32 : x
  2. Step 2: Convert to fraction form
    20,210.52/27,888.30 = 11,257.32/x
  3. Step 3: Cross multiply
    20,210.52x = 27,888.30 × 11,257.32
  4. Step 4: Simplify right side
    20,210.52x = 313,947,517.36
  5. Step 5: Solve for x
    x = 313,947,517.36/20,210.52
  6. Step 6: Final answer
    x = 15,533.87

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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.