Home / 13,112.10-18,074.49-10,455.30

Finding the Fourth Proportional to 13,112.10, 18,074.49 and 10,455.30

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Solution

The fourth proportional to 13,112.10, 18,074.49 and 10,455.30 is: 14,412.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.10 : 18,074.49 = 10,455.30 : x
  2. Step 2: Convert to fraction form
    13,112.10/18,074.49 = 10,455.30/x
  3. Step 3: Cross multiply
    13,112.10x = 18,074.49 × 10,455.30
  4. Step 4: Simplify right side
    13,112.10x = 188,974,215.30
  5. Step 5: Solve for x
    x = 188,974,215.30/13,112.10
  6. Step 6: Final answer
    x = 14,412.20

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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.