Home / 15,327.84-21,153.04-8,613.45

Finding the Fourth Proportional to 15,327.84, 21,153.04 and 8,613.45

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Solution

The fourth proportional to 15,327.84, 21,153.04 and 8,613.45 is: 11,886.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.84 : 21,153.04 = 8,613.45 : x
  2. Step 2: Convert to fraction form
    15,327.84/21,153.04 = 8,613.45/x
  3. Step 3: Cross multiply
    15,327.84x = 21,153.04 × 8,613.45
  4. Step 4: Simplify right side
    15,327.84x = 182,200,546.62
  5. Step 5: Solve for x
    x = 182,200,546.62/15,327.84
  6. Step 6: Final answer
    x = 11,886.90

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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.