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Finding the Fourth Proportional to 12,483.81, 17,223.53 and 8,236.98

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Solution

The fourth proportional to 12,483.81, 17,223.53 and 8,236.98 is: 11,364.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.81 : 17,223.53 = 8,236.98 : x
  2. Step 2: Convert to fraction form
    12,483.81/17,223.53 = 8,236.98/x
  3. Step 3: Cross multiply
    12,483.81x = 17,223.53 × 8,236.98
  4. Step 4: Simplify right side
    12,483.81x = 141,869,830.95
  5. Step 5: Solve for x
    x = 141,869,830.95/12,483.81
  6. Step 6: Final answer
    x = 11,364.31

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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.