Home / 20,653.50-28,501.62-11,222.10

Finding the Fourth Proportional to 20,653.50, 28,501.62 and 11,222.10

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Solution

The fourth proportional to 20,653.50, 28,501.62 and 11,222.10 is: 15,486.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.50 : 28,501.62 = 11,222.10 : x
  2. Step 2: Convert to fraction form
    20,653.50/28,501.62 = 11,222.10/x
  3. Step 3: Cross multiply
    20,653.50x = 28,501.62 × 11,222.10
  4. Step 4: Simplify right side
    20,653.50x = 319,848,029.80
  5. Step 5: Solve for x
    x = 319,848,029.80/20,653.50
  6. Step 6: Final answer
    x = 15,486.38

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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.