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Finding the Fourth Proportional to 13,613.58, 20,421.13 and 4,848.49

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Solution

The fourth proportional to 13,613.58, 20,421.13 and 4,848.49 is: 7,273.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.58 : 20,421.13 = 4,848.49 : x
  2. Step 2: Convert to fraction form
    13,613.58/20,421.13 = 4,848.49/x
  3. Step 3: Cross multiply
    13,613.58x = 20,421.13 × 4,848.49
  4. Step 4: Simplify right side
    13,613.58x = 99,011,644.59
  5. Step 5: Solve for x
    x = 99,011,644.59/13,613.58
  6. Step 6: Final answer
    x = 7,273.01

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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.