Home / 28,102.82-42,133.43-13,294.40

Finding the Fourth Proportional to 28,102.82, 42,133.43 and 13,294.40

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Solution

The fourth proportional to 28,102.82, 42,133.43 and 13,294.40 is: 19,931.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.82 : 42,133.43 = 13,294.40 : x
  2. Step 2: Convert to fraction form
    28,102.82/42,133.43 = 13,294.40/x
  3. Step 3: Cross multiply
    28,102.82x = 42,133.43 × 13,294.40
  4. Step 4: Simplify right side
    28,102.82x = 560,138,494.36
  5. Step 5: Solve for x
    x = 560,138,494.36/28,102.82
  6. Step 6: Final answer
    x = 19,931.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.