Home / 13,242.12-18,272.61-7,862.64

Finding the Fourth Proportional to 13,242.12, 18,272.61 and 7,862.64

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Solution

The fourth proportional to 13,242.12, 18,272.61 and 7,862.64 is: 10,849.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.12 : 18,272.61 = 7,862.64 : x
  2. Step 2: Convert to fraction form
    13,242.12/18,272.61 = 7,862.64/x
  3. Step 3: Cross multiply
    13,242.12x = 18,272.61 × 7,862.64
  4. Step 4: Simplify right side
    13,242.12x = 143,670,954.29
  5. Step 5: Solve for x
    x = 143,670,954.29/13,242.12
  6. Step 6: Final answer
    x = 10,849.54

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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.