Home / 21,237.52-31,856.62-8,090.64

Finding the Fourth Proportional to 21,237.52, 31,856.62 and 8,090.64

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Solution

The fourth proportional to 21,237.52, 31,856.62 and 8,090.64 is: 12,136.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.52 : 31,856.62 = 8,090.64 : x
  2. Step 2: Convert to fraction form
    21,237.52/31,856.62 = 8,090.64/x
  3. Step 3: Cross multiply
    21,237.52x = 31,856.62 × 8,090.64
  4. Step 4: Simplify right side
    21,237.52x = 257,740,444.04
  5. Step 5: Solve for x
    x = 257,740,444.04/21,237.52
  6. Step 6: Final answer
    x = 12,136.09

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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.