Home / 8,409.15-12,554.60-6,424.38

Finding the Fourth Proportional to 8,409.15, 12,554.60 and 6,424.38

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Solution

The fourth proportional to 8,409.15, 12,554.60 and 6,424.38 is: 9,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,409.15 : 12,554.60 = 6,424.38 : x
  2. Step 2: Convert to fraction form
    8,409.15/12,554.60 = 6,424.38/x
  3. Step 3: Cross multiply
    8,409.15x = 12,554.60 × 6,424.38
  4. Step 4: Simplify right side
    8,409.15x = 80,655,489.03
  5. Step 5: Solve for x
    x = 80,655,489.03/8,409.15
  6. Step 6: Final answer
    x = 9,591.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.