Home / 13,137.65-18,130.36-7,473.21

Finding the Fourth Proportional to 13,137.65, 18,130.36 and 7,473.21

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Solution

The fourth proportional to 13,137.65, 18,130.36 and 7,473.21 is: 10,313.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.65 : 18,130.36 = 7,473.21 : x
  2. Step 2: Convert to fraction form
    13,137.65/18,130.36 = 7,473.21/x
  3. Step 3: Cross multiply
    13,137.65x = 18,130.36 × 7,473.21
  4. Step 4: Simplify right side
    13,137.65x = 135,491,995.96
  5. Step 5: Solve for x
    x = 135,491,995.96/13,137.65
  6. Step 6: Final answer
    x = 10,313.26

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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.