Home / 15,261.39-21,059.67-8,455.35

Finding the Fourth Proportional to 15,261.39, 21,059.67 and 8,455.35

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Solution

The fourth proportional to 15,261.39, 21,059.67 and 8,455.35 is: 11,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,261.39 : 21,059.67 = 8,455.35 : x
  2. Step 2: Convert to fraction form
    15,261.39/21,059.67 = 8,455.35/x
  3. Step 3: Cross multiply
    15,261.39x = 21,059.67 × 8,455.35
  4. Step 4: Simplify right side
    15,261.39x = 178,066,880.73
  5. Step 5: Solve for x
    x = 178,066,880.73/15,261.39
  6. Step 6: Final answer
    x = 11,667.80

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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.