Home / 28,982.80-39,996.48-16,407.28

Finding the Fourth Proportional to 28,982.80, 39,996.48 and 16,407.28

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Solution

The fourth proportional to 28,982.80, 39,996.48 and 16,407.28 is: 22,642.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,982.80 : 39,996.48 = 16,407.28 : x
  2. Step 2: Convert to fraction form
    28,982.80/39,996.48 = 16,407.28/x
  3. Step 3: Cross multiply
    28,982.80x = 39,996.48 × 16,407.28
  4. Step 4: Simplify right side
    28,982.80x = 656,233,446.37
  5. Step 5: Solve for x
    x = 656,233,446.37/28,982.80
  6. Step 6: Final answer
    x = 22,642.17

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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.