Home / 20,650.23-28,497.38-11,218.82

Finding the Fourth Proportional to 20,650.23, 28,497.38 and 11,218.82

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Solution

The fourth proportional to 20,650.23, 28,497.38 and 11,218.82 is: 15,482.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.23 : 28,497.38 = 11,218.82 : x
  2. Step 2: Convert to fraction form
    20,650.23/28,497.38 = 11,218.82/x
  3. Step 3: Cross multiply
    20,650.23x = 28,497.38 × 11,218.82
  4. Step 4: Simplify right side
    20,650.23x = 319,706,778.11
  5. Step 5: Solve for x
    x = 319,706,778.11/20,650.23
  6. Step 6: Final answer
    x = 15,482.00

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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.