Home / 39,117.96-53,982.78-21,213

Finding the Fourth Proportional to 39,117.96, 53,982.78 and 21,213

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Solution

The fourth proportional to 39,117.96, 53,982.78 and 21,213 is: 29,273.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,117.96 : 53,982.78 = 21,213 : x
  2. Step 2: Convert to fraction form
    39,117.96/53,982.78 = 21,213/x
  3. Step 3: Cross multiply
    39,117.96x = 53,982.78 × 21,213
  4. Step 4: Simplify right side
    39,117.96x = 1,145,136,632.59
  5. Step 5: Solve for x
    x = 1,145,136,632.59/39,117.96
  6. Step 6: Final answer
    x = 29,273.94

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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.