Home / 30,765.48-42,466.91-18,022.75

Finding the Fourth Proportional to 30,765.48, 42,466.91 and 18,022.75

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Solution

The fourth proportional to 30,765.48, 42,466.91 and 18,022.75 is: 24,877.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,765.48 : 42,466.91 = 18,022.75 : x
  2. Step 2: Convert to fraction form
    30,765.48/42,466.91 = 18,022.75/x
  3. Step 3: Cross multiply
    30,765.48x = 42,466.91 × 18,022.75
  4. Step 4: Simplify right side
    30,765.48x = 765,370,502.20
  5. Step 5: Solve for x
    x = 765,370,502.20/30,765.48
  6. Step 6: Final answer
    x = 24,877.57

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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.