Home / 12,117.81-16,702.02-9,245.55

Finding the Fourth Proportional to 12,117.81, 16,702.02 and 9,245.55

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Solution

The fourth proportional to 12,117.81, 16,702.02 and 9,245.55 is: 12,743.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.81 : 16,702.02 = 9,245.55 : x
  2. Step 2: Convert to fraction form
    12,117.81/16,702.02 = 9,245.55/x
  3. Step 3: Cross multiply
    12,117.81x = 16,702.02 × 9,245.55
  4. Step 4: Simplify right side
    12,117.81x = 154,419,361.01
  5. Step 5: Solve for x
    x = 154,419,361.01/12,117.81
  6. Step 6: Final answer
    x = 12,743.17

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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.