Home / 15,291.37-21,073.51-11,928.85

Finding the Fourth Proportional to 15,291.37, 21,073.51 and 11,928.85

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Solution

The fourth proportional to 15,291.37, 21,073.51 and 11,928.85 is: 16,439.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291.37 : 21,073.51 = 11,928.85 : x
  2. Step 2: Convert to fraction form
    15,291.37/21,073.51 = 11,928.85/x
  3. Step 3: Cross multiply
    15,291.37x = 21,073.51 × 11,928.85
  4. Step 4: Simplify right side
    15,291.37x = 251,382,739.76
  5. Step 5: Solve for x
    x = 251,382,739.76/15,291.37
  6. Step 6: Final answer
    x = 16,439.52

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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.