Home / 20,827.28-31,241.51-8,176.51

Finding the Fourth Proportional to 20,827.28, 31,241.51 and 8,176.51

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Solution

The fourth proportional to 20,827.28, 31,241.51 and 8,176.51 is: 12,265.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.28 : 31,241.51 = 8,176.51 : x
  2. Step 2: Convert to fraction form
    20,827.28/31,241.51 = 8,176.51/x
  3. Step 3: Cross multiply
    20,827.28x = 31,241.51 × 8,176.51
  4. Step 4: Simplify right side
    20,827.28x = 255,446,482.89
  5. Step 5: Solve for x
    x = 255,446,482.89/20,827.28
  6. Step 6: Final answer
    x = 12,265.00

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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.