Home / 20,984.88-31,484.60-9,306.30

Finding the Fourth Proportional to 20,984.88, 31,484.60 and 9,306.30

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Solution

The fourth proportional to 20,984.88, 31,484.60 and 9,306.30 is: 13,962.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.88 : 31,484.60 = 9,306.30 : x
  2. Step 2: Convert to fraction form
    20,984.88/31,484.60 = 9,306.30/x
  3. Step 3: Cross multiply
    20,984.88x = 31,484.60 × 9,306.30
  4. Step 4: Simplify right side
    20,984.88x = 293,005,132.98
  5. Step 5: Solve for x
    x = 293,005,132.98/20,984.88
  6. Step 6: Final answer
    x = 13,962.68

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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.