Home / 20,533.22-28,335.38-11,580.50

Finding the Fourth Proportional to 20,533.22, 28,335.38 and 11,580.50

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Solution

The fourth proportional to 20,533.22, 28,335.38 and 11,580.50 is: 15,980.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.22 : 28,335.38 = 11,580.50 : x
  2. Step 2: Convert to fraction form
    20,533.22/28,335.38 = 11,580.50/x
  3. Step 3: Cross multiply
    20,533.22x = 28,335.38 × 11,580.50
  4. Step 4: Simplify right side
    20,533.22x = 328,137,668.51
  5. Step 5: Solve for x
    x = 328,137,668.51/20,533.22
  6. Step 6: Final answer
    x = 15,980.82

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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.