Home / 13,655.34-18,841.68-7,687.26

Finding the Fourth Proportional to 13,655.34, 18,841.68 and 7,687.26

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Solution

The fourth proportional to 13,655.34, 18,841.68 and 7,687.26 is: 10,606.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.34 : 18,841.68 = 7,687.26 : x
  2. Step 2: Convert to fraction form
    13,655.34/18,841.68 = 7,687.26/x
  3. Step 3: Cross multiply
    13,655.34x = 18,841.68 × 7,687.26
  4. Step 4: Simplify right side
    13,655.34x = 144,840,893.00
  5. Step 5: Solve for x
    x = 144,840,893.00/13,655.34
  6. Step 6: Final answer
    x = 10,606.90

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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.