Home / 30,447.25-42,017.22-18,508.36

Finding the Fourth Proportional to 30,447.25, 42,017.22 and 18,508.36

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Solution

The fourth proportional to 30,447.25, 42,017.22 and 18,508.36 is: 25,541.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,447.25 : 42,017.22 = 18,508.36 : x
  2. Step 2: Convert to fraction form
    30,447.25/42,017.22 = 18,508.36/x
  3. Step 3: Cross multiply
    30,447.25x = 42,017.22 × 18,508.36
  4. Step 4: Simplify right side
    30,447.25x = 777,669,833.96
  5. Step 5: Solve for x
    x = 777,669,833.96/30,447.25
  6. Step 6: Final answer
    x = 25,541.55

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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.