Home / 39,861.32-55,007.98-21,956.33

Finding the Fourth Proportional to 39,861.32, 55,007.98 and 21,956.33

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Solution

The fourth proportional to 39,861.32, 55,007.98 and 21,956.33 is: 30,299.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,861.32 : 55,007.98 = 21,956.33 : x
  2. Step 2: Convert to fraction form
    39,861.32/55,007.98 = 21,956.33/x
  3. Step 3: Cross multiply
    39,861.32x = 55,007.98 × 21,956.33
  4. Step 4: Simplify right side
    39,861.32x = 1,207,773,444.14
  5. Step 5: Solve for x
    x = 1,207,773,444.14/39,861.32
  6. Step 6: Final answer
    x = 30,299.39

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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.