Home / 13,485.42-18,619.47-11,253.06

Finding the Fourth Proportional to 13,485.42, 18,619.47 and 11,253.06

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Solution

The fourth proportional to 13,485.42, 18,619.47 and 11,253.06 is: 15,537.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.42 : 18,619.47 = 11,253.06 : x
  2. Step 2: Convert to fraction form
    13,485.42/18,619.47 = 11,253.06/x
  3. Step 3: Cross multiply
    13,485.42x = 18,619.47 × 11,253.06
  4. Step 4: Simplify right side
    13,485.42x = 209,526,013.08
  5. Step 5: Solve for x
    x = 209,526,013.08/13,485.42
  6. Step 6: Final answer
    x = 15,537.23

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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.