Home / 20,639.37-28,482.36-11,207.94

Finding the Fourth Proportional to 20,639.37, 28,482.36 and 11,207.94

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Solution

The fourth proportional to 20,639.37, 28,482.36 and 11,207.94 is: 15,466.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.37 : 28,482.36 = 11,207.94 : x
  2. Step 2: Convert to fraction form
    20,639.37/28,482.36 = 11,207.94/x
  3. Step 3: Cross multiply
    20,639.37x = 28,482.36 × 11,207.94
  4. Step 4: Simplify right side
    20,639.37x = 319,228,581.94
  5. Step 5: Solve for x
    x = 319,228,581.94/20,639.37
  6. Step 6: Final answer
    x = 15,466.97

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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.