Home / 12,867.13-17,756.64-6,979.13

Finding the Fourth Proportional to 12,867.13, 17,756.64 and 6,979.13

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Solution

The fourth proportional to 12,867.13, 17,756.64 and 6,979.13 is: 9,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,867.13 : 17,756.64 = 6,979.13 : x
  2. Step 2: Convert to fraction form
    12,867.13/17,756.64 = 6,979.13/x
  3. Step 3: Cross multiply
    12,867.13x = 17,756.64 × 6,979.13
  4. Step 4: Simplify right side
    12,867.13x = 123,925,898.92
  5. Step 5: Solve for x
    x = 123,925,898.92/12,867.13
  6. Step 6: Final answer
    x = 9,631.20

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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.