Home / 13,305.13-18,345.90-9,942.28

Finding the Fourth Proportional to 13,305.13, 18,345.90 and 9,942.28

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Solution

The fourth proportional to 13,305.13, 18,345.90 and 9,942.28 is: 13,709.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.13 : 18,345.90 = 9,942.28 : x
  2. Step 2: Convert to fraction form
    13,305.13/18,345.90 = 9,942.28/x
  3. Step 3: Cross multiply
    13,305.13x = 18,345.90 × 9,942.28
  4. Step 4: Simplify right side
    13,305.13x = 182,400,074.65
  5. Step 5: Solve for x
    x = 182,400,074.65/13,305.13
  6. Step 6: Final answer
    x = 13,709.00

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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.