Home / 13,984.50-20,962.10-5,215.88

Finding the Fourth Proportional to 13,984.50, 20,962.10 and 5,215.88

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Solution

The fourth proportional to 13,984.50, 20,962.10 and 5,215.88 is: 7,818.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.50 : 20,962.10 = 5,215.88 : x
  2. Step 2: Convert to fraction form
    13,984.50/20,962.10 = 5,215.88/x
  3. Step 3: Cross multiply
    13,984.50x = 20,962.10 × 5,215.88
  4. Step 4: Simplify right side
    13,984.50x = 109,335,798.15
  5. Step 5: Solve for x
    x = 109,335,798.15/13,984.50
  6. Step 6: Final answer
    x = 7,818.36

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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.