Home / 20,653.68-28,501.92-11,222.22

Finding the Fourth Proportional to 20,653.68, 28,501.92 and 11,222.22

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Solution

The fourth proportional to 20,653.68, 28,501.92 and 11,222.22 is: 15,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.68 : 28,501.92 = 11,222.22 : x
  2. Step 2: Convert to fraction form
    20,653.68/28,501.92 = 11,222.22/x
  3. Step 3: Cross multiply
    20,653.68x = 28,501.92 × 11,222.22
  4. Step 4: Simplify right side
    20,653.68x = 319,854,816.66
  5. Step 5: Solve for x
    x = 319,854,816.66/20,653.68
  6. Step 6: Final answer
    x = 15,486.58

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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.