Home / 19,213.72-28,627.40-18,139.42

Finding the Fourth Proportional to 19,213.72, 28,627.40 and 18,139.42

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Solution

The fourth proportional to 19,213.72, 28,627.40 and 18,139.42 is: 27,026.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,213.72 : 28,627.40 = 18,139.42 : x
  2. Step 2: Convert to fraction form
    19,213.72/28,627.40 = 18,139.42/x
  3. Step 3: Cross multiply
    19,213.72x = 28,627.40 × 18,139.42
  4. Step 4: Simplify right side
    19,213.72x = 519,284,411.21
  5. Step 5: Solve for x
    x = 519,284,411.21/19,213.72
  6. Step 6: Final answer
    x = 27,026.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.