Home / 12,905.89-17,810.84-9,713.43

Finding the Fourth Proportional to 12,905.89, 17,810.84 and 9,713.43

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Solution

The fourth proportional to 12,905.89, 17,810.84 and 9,713.43 is: 13,405.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.89 : 17,810.84 = 9,713.43 : x
  2. Step 2: Convert to fraction form
    12,905.89/17,810.84 = 9,713.43/x
  3. Step 3: Cross multiply
    12,905.89x = 17,810.84 × 9,713.43
  4. Step 4: Simplify right side
    12,905.89x = 173,004,371.86
  5. Step 5: Solve for x
    x = 173,004,371.86/12,905.89
  6. Step 6: Final answer
    x = 13,405.07

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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.