Home / 20,533.52-28,336.67-11,579.28

Finding the Fourth Proportional to 20,533.52, 28,336.67 and 11,579.28

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Solution

The fourth proportional to 20,533.52, 28,336.67 and 11,579.28 is: 15,979.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.52 : 28,336.67 = 11,579.28 : x
  2. Step 2: Convert to fraction form
    20,533.52/28,336.67 = 11,579.28/x
  3. Step 3: Cross multiply
    20,533.52x = 28,336.67 × 11,579.28
  4. Step 4: Simplify right side
    20,533.52x = 328,118,115.46
  5. Step 5: Solve for x
    x = 328,118,115.46/20,533.52
  6. Step 6: Final answer
    x = 15,979.63

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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.