Home / 15,579.77-21,499.04-8,865.23

Finding the Fourth Proportional to 15,579.77, 21,499.04 and 8,865.23

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Solution

The fourth proportional to 15,579.77, 21,499.04 and 8,865.23 is: 12,233.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.77 : 21,499.04 = 8,865.23 : x
  2. Step 2: Convert to fraction form
    15,579.77/21,499.04 = 8,865.23/x
  3. Step 3: Cross multiply
    15,579.77x = 21,499.04 × 8,865.23
  4. Step 4: Simplify right side
    15,579.77x = 190,593,849.05
  5. Step 5: Solve for x
    x = 190,593,849.05/15,579.77
  6. Step 6: Final answer
    x = 12,233.42

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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.