Home / 30,747.36-42,432.21-18,810.48

Finding the Fourth Proportional to 30,747.36, 42,432.21 and 18,810.48

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Solution

The fourth proportional to 30,747.36, 42,432.21 and 18,810.48 is: 25,958.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,747.36 : 42,432.21 = 18,810.48 : x
  2. Step 2: Convert to fraction form
    30,747.36/42,432.21 = 18,810.48/x
  3. Step 3: Cross multiply
    30,747.36x = 42,432.21 × 18,810.48
  4. Step 4: Simplify right side
    30,747.36x = 798,170,237.56
  5. Step 5: Solve for x
    x = 798,170,237.56/30,747.36
  6. Step 6: Final answer
    x = 25,958.98

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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.