Home / 21,402.43-32,086.24-8,931.75

Finding the Fourth Proportional to 21,402.43, 32,086.24 and 8,931.75

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Solution

The fourth proportional to 21,402.43, 32,086.24 and 8,931.75 is: 13,390.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.43 : 32,086.24 = 8,931.75 : x
  2. Step 2: Convert to fraction form
    21,402.43/32,086.24 = 8,931.75/x
  3. Step 3: Cross multiply
    21,402.43x = 32,086.24 × 8,931.75
  4. Step 4: Simplify right side
    21,402.43x = 286,586,274.12
  5. Step 5: Solve for x
    x = 286,586,274.12/21,402.43
  6. Step 6: Final answer
    x = 13,390.36

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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.