Home / 9,865.94-13,615.11-5,389.82

Finding the Fourth Proportional to 9,865.94, 13,615.11 and 5,389.82

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Solution

The fourth proportional to 9,865.94, 13,615.11 and 5,389.82 is: 7,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,865.94 : 13,615.11 = 5,389.82 : x
  2. Step 2: Convert to fraction form
    9,865.94/13,615.11 = 5,389.82/x
  3. Step 3: Cross multiply
    9,865.94x = 13,615.11 × 5,389.82
  4. Step 4: Simplify right side
    9,865.94x = 73,382,992.18
  5. Step 5: Solve for x
    x = 73,382,992.18/9,865.94
  6. Step 6: Final answer
    x = 7,438.01

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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.