Home / 13,403.62-18,484.88-8,368.30

Finding the Fourth Proportional to 13,403.62, 18,484.88 and 8,368.30

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Solution

The fourth proportional to 13,403.62, 18,484.88 and 8,368.30 is: 11,540.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.62 : 18,484.88 = 8,368.30 : x
  2. Step 2: Convert to fraction form
    13,403.62/18,484.88 = 8,368.30/x
  3. Step 3: Cross multiply
    13,403.62x = 18,484.88 × 8,368.30
  4. Step 4: Simplify right side
    13,403.62x = 154,686,907.96
  5. Step 5: Solve for x
    x = 154,686,907.96/13,403.62
  6. Step 6: Final answer
    x = 11,540.69

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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.