Home / 20,636.66-28,477.82-11,205.02

Finding the Fourth Proportional to 20,636.66, 28,477.82 and 11,205.02

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Solution

The fourth proportional to 20,636.66, 28,477.82 and 11,205.02 is: 15,462.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.66 : 28,477.82 = 11,205.02 : x
  2. Step 2: Convert to fraction form
    20,636.66/28,477.82 = 11,205.02/x
  3. Step 3: Cross multiply
    20,636.66x = 28,477.82 × 11,205.02
  4. Step 4: Simplify right side
    20,636.66x = 319,094,344.24
  5. Step 5: Solve for x
    x = 319,094,344.24/20,636.66
  6. Step 6: Final answer
    x = 15,462.50

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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.