Home / 13,246.12-18,295.82-9,903.78

Finding the Fourth Proportional to 13,246.12, 18,295.82 and 9,903.78

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Solution

The fourth proportional to 13,246.12, 18,295.82 and 9,903.78 is: 13,679.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,246.12 : 18,295.82 = 9,903.78 : x
  2. Step 2: Convert to fraction form
    13,246.12/18,295.82 = 9,903.78/x
  3. Step 3: Cross multiply
    13,246.12x = 18,295.82 × 9,903.78
  4. Step 4: Simplify right side
    13,246.12x = 181,197,776.20
  5. Step 5: Solve for x
    x = 181,197,776.20/13,246.12
  6. Step 6: Final answer
    x = 13,679.31

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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.