Home / 30,833.69-42,521.61-20,467.10

Finding the Fourth Proportional to 30,833.69, 42,521.61 and 20,467.10

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Solution

The fourth proportional to 30,833.69, 42,521.61 and 20,467.10 is: 28,225.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,833.69 : 42,521.61 = 20,467.10 : x
  2. Step 2: Convert to fraction form
    30,833.69/42,521.61 = 20,467.10/x
  3. Step 3: Cross multiply
    30,833.69x = 42,521.61 × 20,467.10
  4. Step 4: Simplify right side
    30,833.69x = 870,294,044.03
  5. Step 5: Solve for x
    x = 870,294,044.03/30,833.69
  6. Step 6: Final answer
    x = 28,225.43

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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.