Home / 30,300.52-41,827.62-20,370.28

Finding the Fourth Proportional to 30,300.52, 41,827.62 and 20,370.28

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Solution

The fourth proportional to 30,300.52, 41,827.62 and 20,370.28 is: 28,119.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,300.52 : 41,827.62 = 20,370.28 : x
  2. Step 2: Convert to fraction form
    30,300.52/41,827.62 = 20,370.28/x
  3. Step 3: Cross multiply
    30,300.52x = 41,827.62 × 20,370.28
  4. Step 4: Simplify right side
    30,300.52x = 852,040,331.13
  5. Step 5: Solve for x
    x = 852,040,331.13/30,300.52
  6. Step 6: Final answer
    x = 28,119.66

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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.