Home / 13,412.35-18,508.68-7,443.86

Finding the Fourth Proportional to 13,412.35, 18,508.68 and 7,443.86

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Solution

The fourth proportional to 13,412.35, 18,508.68 and 7,443.86 is: 10,272.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.35 : 18,508.68 = 7,443.86 : x
  2. Step 2: Convert to fraction form
    13,412.35/18,508.68 = 7,443.86/x
  3. Step 3: Cross multiply
    13,412.35x = 18,508.68 × 7,443.86
  4. Step 4: Simplify right side
    13,412.35x = 137,776,041.31
  5. Step 5: Solve for x
    x = 137,776,041.31/13,412.35
  6. Step 6: Final answer
    x = 10,272.33

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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.