Home / 30,648.30-42,293.04-17,220.12

Finding the Fourth Proportional to 30,648.30, 42,293.04 and 17,220.12

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Solution

The fourth proportional to 30,648.30, 42,293.04 and 17,220.12 is: 23,762.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,648.30 : 42,293.04 = 17,220.12 : x
  2. Step 2: Convert to fraction form
    30,648.30/42,293.04 = 17,220.12/x
  3. Step 3: Cross multiply
    30,648.30x = 42,293.04 × 17,220.12
  4. Step 4: Simplify right side
    30,648.30x = 728,291,223.96
  5. Step 5: Solve for x
    x = 728,291,223.96/30,648.30
  6. Step 6: Final answer
    x = 23,762.86

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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.