Home / 20,984.25-31,476.51-5,402.01

Finding the Fourth Proportional to 20,984.25, 31,476.51 and 5,402.01

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Solution

The fourth proportional to 20,984.25, 31,476.51 and 5,402.01 is: 8,103.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.25 : 31,476.51 = 5,402.01 : x
  2. Step 2: Convert to fraction form
    20,984.25/31,476.51 = 5,402.01/x
  3. Step 3: Cross multiply
    20,984.25x = 31,476.51 × 5,402.01
  4. Step 4: Simplify right side
    20,984.25x = 170,036,421.79
  5. Step 5: Solve for x
    x = 170,036,421.79/20,984.25
  6. Step 6: Final answer
    x = 8,103.05

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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.