Home / 15,421.33-21,282.33-8,704.48

Finding the Fourth Proportional to 15,421.33, 21,282.33 and 8,704.48

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Solution

The fourth proportional to 15,421.33, 21,282.33 and 8,704.48 is: 12,012.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,421.33 : 21,282.33 = 8,704.48 : x
  2. Step 2: Convert to fraction form
    15,421.33/21,282.33 = 8,704.48/x
  3. Step 3: Cross multiply
    15,421.33x = 21,282.33 × 8,704.48
  4. Step 4: Simplify right side
    15,421.33x = 185,251,615.84
  5. Step 5: Solve for x
    x = 185,251,615.84/15,421.33
  6. Step 6: Final answer
    x = 12,012.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.