Home / 28,991.36-40,009.92-16,411.52

Finding the Fourth Proportional to 28,991.36, 40,009.92 and 16,411.52

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Solution

The fourth proportional to 28,991.36, 40,009.92 and 16,411.52 is: 22,648.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991.36 : 40,009.92 = 16,411.52 : x
  2. Step 2: Convert to fraction form
    28,991.36/40,009.92 = 16,411.52/x
  3. Step 3: Cross multiply
    28,991.36x = 40,009.92 × 16,411.52
  4. Step 4: Simplify right side
    28,991.36x = 656,623,602.28
  5. Step 5: Solve for x
    x = 656,623,602.28/28,991.36
  6. Step 6: Final answer
    x = 22,648.94

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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.