Home / 30,720.96-46,001.25-21,333.06

Finding the Fourth Proportional to 30,720.96, 46,001.25 and 21,333.06

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Solution

The fourth proportional to 30,720.96, 46,001.25 and 21,333.06 is: 31,943.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,720.96 : 46,001.25 = 21,333.06 : x
  2. Step 2: Convert to fraction form
    30,720.96/46,001.25 = 21,333.06/x
  3. Step 3: Cross multiply
    30,720.96x = 46,001.25 × 21,333.06
  4. Step 4: Simplify right side
    30,720.96x = 981,347,426.33
  5. Step 5: Solve for x
    x = 981,347,426.33/30,720.96
  6. Step 6: Final answer
    x = 31,943.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.