Home / 13,444.40-20,142.30-11,889.20

Finding the Fourth Proportional to 13,444.40, 20,142.30 and 11,889.20

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Solution

The fourth proportional to 13,444.40, 20,142.30 and 11,889.20 is: 17,812.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,444.40 : 20,142.30 = 11,889.20 : x
  2. Step 2: Convert to fraction form
    13,444.40/20,142.30 = 11,889.20/x
  3. Step 3: Cross multiply
    13,444.40x = 20,142.30 × 11,889.20
  4. Step 4: Simplify right side
    13,444.40x = 239,475,833.16
  5. Step 5: Solve for x
    x = 239,475,833.16/13,444.40
  6. Step 6: Final answer
    x = 17,812.31

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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.