Home / 13,526.55-18,679.41-12,790.26

Finding the Fourth Proportional to 13,526.55, 18,679.41 and 12,790.26

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Solution

The fourth proportional to 13,526.55, 18,679.41 and 12,790.26 is: 17,662.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,526.55 : 18,679.41 = 12,790.26 : x
  2. Step 2: Convert to fraction form
    13,526.55/18,679.41 = 12,790.26/x
  3. Step 3: Cross multiply
    13,526.55x = 18,679.41 × 12,790.26
  4. Step 4: Simplify right side
    13,526.55x = 238,914,510.55
  5. Step 5: Solve for x
    x = 238,914,510.55/13,526.55
  6. Step 6: Final answer
    x = 17,662.63

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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.