Home / 39,117.84-53,982.45-21,212.38

Finding the Fourth Proportional to 39,117.84, 53,982.45 and 21,212.38

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Solution

The fourth proportional to 39,117.84, 53,982.45 and 21,212.38 is: 29,273.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,117.84 : 53,982.45 = 21,212.38 : x
  2. Step 2: Convert to fraction form
    39,117.84/53,982.45 = 21,212.38/x
  3. Step 3: Cross multiply
    39,117.84x = 53,982.45 × 21,212.38
  4. Step 4: Simplify right side
    39,117.84x = 1,145,096,310.21
  5. Step 5: Solve for x
    x = 1,145,096,310.21/39,117.84
  6. Step 6: Final answer
    x = 29,273.00

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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.