Home / 13,520.22-18,663.04-10,172.77

Finding the Fourth Proportional to 13,520.22, 18,663.04 and 10,172.77

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Solution

The fourth proportional to 13,520.22, 18,663.04 and 10,172.77 is: 14,042.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.22 : 18,663.04 = 10,172.77 : x
  2. Step 2: Convert to fraction form
    13,520.22/18,663.04 = 10,172.77/x
  3. Step 3: Cross multiply
    13,520.22x = 18,663.04 × 10,172.77
  4. Step 4: Simplify right side
    13,520.22x = 189,854,681.96
  5. Step 5: Solve for x
    x = 189,854,681.96/13,520.22
  6. Step 6: Final answer
    x = 14,042.28

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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.