Home / 11,184.47-15,434.97-6,405.15

Finding the Fourth Proportional to 11,184.47, 15,434.97 and 6,405.15

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Solution

The fourth proportional to 11,184.47, 15,434.97 and 6,405.15 is: 8,839.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,184.47 : 15,434.97 = 6,405.15 : x
  2. Step 2: Convert to fraction form
    11,184.47/15,434.97 = 6,405.15/x
  3. Step 3: Cross multiply
    11,184.47x = 15,434.97 × 6,405.15
  4. Step 4: Simplify right side
    11,184.47x = 98,863,298.10
  5. Step 5: Solve for x
    x = 98,863,298.10/11,184.47
  6. Step 6: Final answer
    x = 8,839.34

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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.