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Finding the Fourth Proportional to 12,357.06, 17,053.08 and 6,979.07

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Solution

The fourth proportional to 12,357.06, 17,053.08 and 6,979.07 is: 9,631.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357.06 : 17,053.08 = 6,979.07 : x
  2. Step 2: Convert to fraction form
    12,357.06/17,053.08 = 6,979.07/x
  3. Step 3: Cross multiply
    12,357.06x = 17,053.08 × 6,979.07
  4. Step 4: Simplify right side
    12,357.06x = 119,014,559.57
  5. Step 5: Solve for x
    x = 119,014,559.57/12,357.06
  6. Step 6: Final answer
    x = 9,631.30

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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.