Home / 30,648.90-42,292.89-17,219.10

Finding the Fourth Proportional to 30,648.90, 42,292.89 and 17,219.10

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Solution

The fourth proportional to 30,648.90, 42,292.89 and 17,219.10 is: 23,760.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,648.90 : 42,292.89 = 17,219.10 : x
  2. Step 2: Convert to fraction form
    30,648.90/42,292.89 = 17,219.10/x
  3. Step 3: Cross multiply
    30,648.90x = 42,292.89 × 17,219.10
  4. Step 4: Simplify right side
    30,648.90x = 728,245,502.20
  5. Step 5: Solve for x
    x = 728,245,502.20/30,648.90
  6. Step 6: Final answer
    x = 23,760.90

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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.