Home / 9,811.67-13,521.74-6,979.10

Finding the Fourth Proportional to 9,811.67, 13,521.74 and 6,979.10

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Solution

The fourth proportional to 9,811.67, 13,521.74 and 6,979.10 is: 9,618.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,811.67 : 13,521.74 = 6,979.10 : x
  2. Step 2: Convert to fraction form
    9,811.67/13,521.74 = 6,979.10/x
  3. Step 3: Cross multiply
    9,811.67x = 13,521.74 × 6,979.10
  4. Step 4: Simplify right side
    9,811.67x = 94,369,473.13
  5. Step 5: Solve for x
    x = 94,369,473.13/9,811.67
  6. Step 6: Final answer
    x = 9,618.09

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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.