Home / 28,839.92-39,802.16-16,913.28

Finding the Fourth Proportional to 28,839.92, 39,802.16 and 16,913.28

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Solution

The fourth proportional to 28,839.92, 39,802.16 and 16,913.28 is: 23,342.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,839.92 : 39,802.16 = 16,913.28 : x
  2. Step 2: Convert to fraction form
    28,839.92/39,802.16 = 16,913.28/x
  3. Step 3: Cross multiply
    28,839.92x = 39,802.16 × 16,913.28
  4. Step 4: Simplify right side
    28,839.92x = 673,185,076.68
  5. Step 5: Solve for x
    x = 673,185,076.68/28,839.92
  6. Step 6: Final answer
    x = 23,342.13

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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.