Home / 15,743.36-21,725.85-8,669.75

Finding the Fourth Proportional to 15,743.36, 21,725.85 and 8,669.75

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Solution

The fourth proportional to 15,743.36, 21,725.85 and 8,669.75 is: 11,964.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.36 : 21,725.85 = 8,669.75 : x
  2. Step 2: Convert to fraction form
    15,743.36/21,725.85 = 8,669.75/x
  3. Step 3: Cross multiply
    15,743.36x = 21,725.85 × 8,669.75
  4. Step 4: Simplify right side
    15,743.36x = 188,357,688.04
  5. Step 5: Solve for x
    x = 188,357,688.04/15,743.36
  6. Step 6: Final answer
    x = 11,964.26

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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.