Home / 39,112.74-53,975.64-21,207.66

Finding the Fourth Proportional to 39,112.74, 53,975.64 and 21,207.66

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Solution

The fourth proportional to 39,112.74, 53,975.64 and 21,207.66 is: 29,266.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,112.74 : 53,975.64 = 21,207.66 : x
  2. Step 2: Convert to fraction form
    39,112.74/53,975.64 = 21,207.66/x
  3. Step 3: Cross multiply
    39,112.74x = 53,975.64 × 21,207.66
  4. Step 4: Simplify right side
    39,112.74x = 1,144,697,021.40
  5. Step 5: Solve for x
    x = 1,144,697,021.40/39,112.74
  6. Step 6: Final answer
    x = 29,266.60

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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.