Home / 20,289.90-30,380.16-13,252.48

Finding the Fourth Proportional to 20,289.90, 30,380.16 and 13,252.48

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Solution

The fourth proportional to 20,289.90, 30,380.16 and 13,252.48 is: 19,843.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.90 : 30,380.16 = 13,252.48 : x
  2. Step 2: Convert to fraction form
    20,289.90/30,380.16 = 13,252.48/x
  3. Step 3: Cross multiply
    20,289.90x = 30,380.16 × 13,252.48
  4. Step 4: Simplify right side
    20,289.90x = 402,612,462.80
  5. Step 5: Solve for x
    x = 402,612,462.80/20,289.90
  6. Step 6: Final answer
    x = 19,843.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.