Home / 20,532.65-28,334.88-11,579.72

Finding the Fourth Proportional to 20,532.65, 28,334.88 and 11,579.72

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Solution

The fourth proportional to 20,532.65, 28,334.88 and 11,579.72 is: 15,979.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.65 : 28,334.88 = 11,579.72 : x
  2. Step 2: Convert to fraction form
    20,532.65/28,334.88 = 11,579.72/x
  3. Step 3: Cross multiply
    20,532.65x = 28,334.88 × 11,579.72
  4. Step 4: Simplify right side
    20,532.65x = 328,109,834.96
  5. Step 5: Solve for x
    x = 328,109,834.96/20,532.65
  6. Step 6: Final answer
    x = 15,979.91

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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.