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Finding the Fourth Proportional to 12,507.86, 17,260.88 and 6,918.86

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Solution

The fourth proportional to 12,507.86, 17,260.88 and 6,918.86 is: 9,548.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,507.86 : 17,260.88 = 6,918.86 : x
  2. Step 2: Convert to fraction form
    12,507.86/17,260.88 = 6,918.86/x
  3. Step 3: Cross multiply
    12,507.86x = 17,260.88 × 6,918.86
  4. Step 4: Simplify right side
    12,507.86x = 119,425,491.30
  5. Step 5: Solve for x
    x = 119,425,491.30/12,507.86
  6. Step 6: Final answer
    x = 9,548.04

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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.