Home / 11,381.40-15,706.38-6,345.60

Finding the Fourth Proportional to 11,381.40, 15,706.38 and 6,345.60

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Solution

The fourth proportional to 11,381.40, 15,706.38 and 6,345.60 is: 8,756.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,381.40 : 15,706.38 = 6,345.60 : x
  2. Step 2: Convert to fraction form
    11,381.40/15,706.38 = 6,345.60/x
  3. Step 3: Cross multiply
    11,381.40x = 15,706.38 × 6,345.60
  4. Step 4: Simplify right side
    11,381.40x = 99,666,404.93
  5. Step 5: Solve for x
    x = 99,666,404.93/11,381.40
  6. Step 6: Final answer
    x = 8,756.95

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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.