Home / 39,116.96-53,981.42-21,211.96

Finding the Fourth Proportional to 39,116.96, 53,981.42 and 21,211.96

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Solution

The fourth proportional to 39,116.96, 53,981.42 and 21,211.96 is: 29,272.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,116.96 : 53,981.42 = 21,211.96 : x
  2. Step 2: Convert to fraction form
    39,116.96/53,981.42 = 21,211.96/x
  3. Step 3: Cross multiply
    39,116.96x = 53,981.42 × 21,211.96
  4. Step 4: Simplify right side
    39,116.96x = 1,145,052,018.52
  5. Step 5: Solve for x
    x = 1,145,052,018.52/39,116.96
  6. Step 6: Final answer
    x = 29,272.52

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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.