Home / 11,394.99-15,725.09-6,290.51

Finding the Fourth Proportional to 11,394.99, 15,725.09 and 6,290.51

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Solution

The fourth proportional to 11,394.99, 15,725.09 and 6,290.51 is: 8,680.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,394.99 : 15,725.09 = 6,290.51 : x
  2. Step 2: Convert to fraction form
    11,394.99/15,725.09 = 6,290.51/x
  3. Step 3: Cross multiply
    11,394.99x = 15,725.09 × 6,290.51
  4. Step 4: Simplify right side
    11,394.99x = 98,918,812.31
  5. Step 5: Solve for x
    x = 98,918,812.31/11,394.99
  6. Step 6: Final answer
    x = 8,680.90

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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.