Home / 28,684.45-39,573.48-21,148.69

Finding the Fourth Proportional to 28,684.45, 39,573.48 and 21,148.69

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Solution

The fourth proportional to 28,684.45, 39,573.48 and 21,148.69 is: 29,177.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,684.45 : 39,573.48 = 21,148.69 : x
  2. Step 2: Convert to fraction form
    28,684.45/39,573.48 = 21,148.69/x
  3. Step 3: Cross multiply
    28,684.45x = 39,573.48 × 21,148.69
  4. Step 4: Simplify right side
    28,684.45x = 836,927,260.74
  5. Step 5: Solve for x
    x = 836,927,260.74/28,684.45
  6. Step 6: Final answer
    x = 29,177.04

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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.