Home / 28,717.26-39,628.56-15,970.38

Finding the Fourth Proportional to 28,717.26, 39,628.56 and 15,970.38

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Solution

The fourth proportional to 28,717.26, 39,628.56 and 15,970.38 is: 22,038.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,717.26 : 39,628.56 = 15,970.38 : x
  2. Step 2: Convert to fraction form
    28,717.26/39,628.56 = 15,970.38/x
  3. Step 3: Cross multiply
    28,717.26x = 39,628.56 × 15,970.38
  4. Step 4: Simplify right side
    28,717.26x = 632,883,162.05
  5. Step 5: Solve for x
    x = 632,883,162.05/28,717.26
  6. Step 6: Final answer
    x = 22,038.42

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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.