Home / 11,417.49-15,755.81-6,381.72

Finding the Fourth Proportional to 11,417.49, 15,755.81 and 6,381.72

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Solution

The fourth proportional to 11,417.49, 15,755.81 and 6,381.72 is: 8,806.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,417.49 : 15,755.81 = 6,381.72 : x
  2. Step 2: Convert to fraction form
    11,417.49/15,755.81 = 6,381.72/x
  3. Step 3: Cross multiply
    11,417.49x = 15,755.81 × 6,381.72
  4. Step 4: Simplify right side
    11,417.49x = 100,549,135.88
  5. Step 5: Solve for x
    x = 100,549,135.88/11,417.49
  6. Step 6: Final answer
    x = 8,806.59

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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.