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Finding the Fourth Proportional to 12,903.02, 17,785.47 and 8,703.98

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Solution

The fourth proportional to 12,903.02, 17,785.47 and 8,703.98 is: 11,997.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.02 : 17,785.47 = 8,703.98 : x
  2. Step 2: Convert to fraction form
    12,903.02/17,785.47 = 8,703.98/x
  3. Step 3: Cross multiply
    12,903.02x = 17,785.47 × 8,703.98
  4. Step 4: Simplify right side
    12,903.02x = 154,804,375.17
  5. Step 5: Solve for x
    x = 154,804,375.17/12,903.02
  6. Step 6: Final answer
    x = 11,997.53

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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.