Home / 20,676.61-28,533.81-11,245.15

Finding the Fourth Proportional to 20,676.61, 28,533.81 and 11,245.15

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Solution

The fourth proportional to 20,676.61, 28,533.81 and 11,245.15 is: 15,518.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.61 : 28,533.81 = 11,245.15 : x
  2. Step 2: Convert to fraction form
    20,676.61/28,533.81 = 11,245.15/x
  3. Step 3: Cross multiply
    20,676.61x = 28,533.81 × 11,245.15
  4. Step 4: Simplify right side
    20,676.61x = 320,866,973.52
  5. Step 5: Solve for x
    x = 320,866,973.52/20,676.61
  6. Step 6: Final answer
    x = 15,518.35

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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.