Home / 9,889.61-13,647.13-5,412.49

Finding the Fourth Proportional to 9,889.61, 13,647.13 and 5,412.49

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Solution

The fourth proportional to 9,889.61, 13,647.13 and 5,412.49 is: 7,468.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,889.61 : 13,647.13 = 5,412.49 : x
  2. Step 2: Convert to fraction form
    9,889.61/13,647.13 = 5,412.49/x
  3. Step 3: Cross multiply
    9,889.61x = 13,647.13 × 5,412.49
  4. Step 4: Simplify right side
    9,889.61x = 73,864,954.65
  5. Step 5: Solve for x
    x = 73,864,954.65/9,889.61
  6. Step 6: Final answer
    x = 7,468.95

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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.