Home / 30,822.72-42,491.16-20,733.36

Finding the Fourth Proportional to 30,822.72, 42,491.16 and 20,733.36

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Solution

The fourth proportional to 30,822.72, 42,491.16 and 20,733.36 is: 28,582.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,822.72 : 42,491.16 = 20,733.36 : x
  2. Step 2: Convert to fraction form
    30,822.72/42,491.16 = 20,733.36/x
  3. Step 3: Cross multiply
    30,822.72x = 42,491.16 × 20,733.36
  4. Step 4: Simplify right side
    30,822.72x = 880,984,517.10
  5. Step 5: Solve for x
    x = 880,984,517.10/30,822.72
  6. Step 6: Final answer
    x = 28,582.31

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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.