Home / 28,722.12-43,112.22-20,411.52

Finding the Fourth Proportional to 28,722.12, 43,112.22 and 20,411.52

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Solution

The fourth proportional to 28,722.12, 43,112.22 and 20,411.52 is: 30,637.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722.12 : 43,112.22 = 20,411.52 : x
  2. Step 2: Convert to fraction form
    28,722.12/43,112.22 = 20,411.52/x
  3. Step 3: Cross multiply
    28,722.12x = 43,112.22 × 20,411.52
  4. Step 4: Simplify right side
    28,722.12x = 879,985,940.77
  5. Step 5: Solve for x
    x = 879,985,940.77/28,722.12
  6. Step 6: Final answer
    x = 30,637.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.