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Finding the Fourth Proportional to 12,703.70, 17,530.87 and 7,038.43

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Solution

The fourth proportional to 12,703.70, 17,530.87 and 7,038.43 is: 9,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,703.70 : 17,530.87 = 7,038.43 : x
  2. Step 2: Convert to fraction form
    12,703.70/17,530.87 = 7,038.43/x
  3. Step 3: Cross multiply
    12,703.70x = 17,530.87 × 7,038.43
  4. Step 4: Simplify right side
    12,703.70x = 123,389,801.33
  5. Step 5: Solve for x
    x = 123,389,801.33/12,703.70
  6. Step 6: Final answer
    x = 9,712.90

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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.