Home / 20,835.36-31,266-15,203.16

Finding the Fourth Proportional to 20,835.36, 31,266 and 15,203.16

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Solution

The fourth proportional to 20,835.36, 31,266 and 15,203.16 is: 22,814.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.36 : 31,266 = 15,203.16 : x
  2. Step 2: Convert to fraction form
    20,835.36/31,266 = 15,203.16/x
  3. Step 3: Cross multiply
    20,835.36x = 31,266 × 15,203.16
  4. Step 4: Simplify right side
    20,835.36x = 475,342,000.56
  5. Step 5: Solve for x
    x = 475,342,000.56/20,835.36
  6. Step 6: Final answer
    x = 22,814.20

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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.