Home / 28,684.81-39,573.97-21,149.07

Finding the Fourth Proportional to 28,684.81, 39,573.97 and 21,149.07

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Solution

The fourth proportional to 28,684.81, 39,573.97 and 21,149.07 is: 29,177.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,684.81 : 39,573.97 = 21,149.07 : x
  2. Step 2: Convert to fraction form
    28,684.81/39,573.97 = 21,149.07/x
  3. Step 3: Cross multiply
    28,684.81x = 39,573.97 × 21,149.07
  4. Step 4: Simplify right side
    28,684.81x = 836,952,661.71
  5. Step 5: Solve for x
    x = 836,952,661.71/28,684.81
  6. Step 6: Final answer
    x = 29,177.56

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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.