Home / 19,877.39-27,431.45-10,925.21

Finding the Fourth Proportional to 19,877.39, 27,431.45 and 10,925.21

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Solution

The fourth proportional to 19,877.39, 27,431.45 and 10,925.21 is: 15,077.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,877.39 : 27,431.45 = 10,925.21 : x
  2. Step 2: Convert to fraction form
    19,877.39/27,431.45 = 10,925.21/x
  3. Step 3: Cross multiply
    19,877.39x = 27,431.45 × 10,925.21
  4. Step 4: Simplify right side
    19,877.39x = 299,694,351.85
  5. Step 5: Solve for x
    x = 299,694,351.85/19,877.39
  6. Step 6: Final answer
    x = 15,077.15

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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.