Home / 19,872.69-27,434.98-15,325.43

Finding the Fourth Proportional to 19,872.69, 27,434.98 and 15,325.43

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Solution

The fourth proportional to 19,872.69, 27,434.98 and 15,325.43 is: 21,157.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.69 : 27,434.98 = 15,325.43 : x
  2. Step 2: Convert to fraction form
    19,872.69/27,434.98 = 15,325.43/x
  3. Step 3: Cross multiply
    19,872.69x = 27,434.98 × 15,325.43
  4. Step 4: Simplify right side
    19,872.69x = 420,452,781.58
  5. Step 5: Solve for x
    x = 420,452,781.58/19,872.69
  6. Step 6: Final answer
    x = 21,157.31

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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.