Home / 30,833.91-42,570.90-18,903.83

Finding the Fourth Proportional to 30,833.91, 42,570.90 and 18,903.83

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Solution

The fourth proportional to 30,833.91, 42,570.90 and 18,903.83 is: 26,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,833.91 : 42,570.90 = 18,903.83 : x
  2. Step 2: Convert to fraction form
    30,833.91/42,570.90 = 18,903.83/x
  3. Step 3: Cross multiply
    30,833.91x = 42,570.90 × 18,903.83
  4. Step 4: Simplify right side
    30,833.91x = 804,752,843.69
  5. Step 5: Solve for x
    x = 804,752,843.69/30,833.91
  6. Step 6: Final answer
    x = 26,099.60

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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.