Home / 30,640.22-42,285.49-17,029.79

Finding the Fourth Proportional to 30,640.22, 42,285.49 and 17,029.79

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Solution

The fourth proportional to 30,640.22, 42,285.49 and 17,029.79 is: 23,502.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,640.22 : 42,285.49 = 17,029.79 : x
  2. Step 2: Convert to fraction form
    30,640.22/42,285.49 = 17,029.79/x
  3. Step 3: Cross multiply
    30,640.22x = 42,285.49 × 17,029.79
  4. Step 4: Simplify right side
    30,640.22x = 720,113,077.89
  5. Step 5: Solve for x
    x = 720,113,077.89/30,640.22
  6. Step 6: Final answer
    x = 23,502.21

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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.