Home / 12,681.45-17,504.46-8,905.53

Finding the Fourth Proportional to 12,681.45, 17,504.46 and 8,905.53

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Solution

The fourth proportional to 12,681.45, 17,504.46 and 8,905.53 is: 12,292.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.45 : 17,504.46 = 8,905.53 : x
  2. Step 2: Convert to fraction form
    12,681.45/17,504.46 = 8,905.53/x
  3. Step 3: Cross multiply
    12,681.45x = 17,504.46 × 8,905.53
  4. Step 4: Simplify right side
    12,681.45x = 155,886,493.66
  5. Step 5: Solve for x
    x = 155,886,493.66/12,681.45
  6. Step 6: Final answer
    x = 12,292.48

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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.