Home / 13,126.86-18,124.20-10,620.09

Finding the Fourth Proportional to 13,126.86, 18,124.20 and 10,620.09

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Solution

The fourth proportional to 13,126.86, 18,124.20 and 10,620.09 is: 14,663.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.86 : 18,124.20 = 10,620.09 : x
  2. Step 2: Convert to fraction form
    13,126.86/18,124.20 = 10,620.09/x
  3. Step 3: Cross multiply
    13,126.86x = 18,124.20 × 10,620.09
  4. Step 4: Simplify right side
    13,126.86x = 192,480,635.18
  5. Step 5: Solve for x
    x = 192,480,635.18/13,126.86
  6. Step 6: Final answer
    x = 14,663.11

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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.