Home / 19,872.08-27,423.72-10,920.56

Finding the Fourth Proportional to 19,872.08, 27,423.72 and 10,920.56

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Solution

The fourth proportional to 19,872.08, 27,423.72 and 10,920.56 is: 15,070.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.08 : 27,423.72 = 10,920.56 : x
  2. Step 2: Convert to fraction form
    19,872.08/27,423.72 = 10,920.56/x
  3. Step 3: Cross multiply
    19,872.08x = 27,423.72 × 10,920.56
  4. Step 4: Simplify right side
    19,872.08x = 299,482,379.68
  5. Step 5: Solve for x
    x = 299,482,379.68/19,872.08
  6. Step 6: Final answer
    x = 15,070.51

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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.