Home / 21,387.64-32,086.92-8,903.52

Finding the Fourth Proportional to 21,387.64, 32,086.92 and 8,903.52

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Solution

The fourth proportional to 21,387.64, 32,086.92 and 8,903.52 is: 13,357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.64 : 32,086.92 = 8,903.52 : x
  2. Step 2: Convert to fraction form
    21,387.64/32,086.92 = 8,903.52/x
  3. Step 3: Cross multiply
    21,387.64x = 32,086.92 × 8,903.52
  4. Step 4: Simplify right side
    21,387.64x = 285,686,533.96
  5. Step 5: Solve for x
    x = 285,686,533.96/21,387.64
  6. Step 6: Final answer
    x = 13,357.55

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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.