Home / 28,133.88-42,206.51-12,551.50

Finding the Fourth Proportional to 28,133.88, 42,206.51 and 12,551.50

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Solution

The fourth proportional to 28,133.88, 42,206.51 and 12,551.50 is: 18,829.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.88 : 42,206.51 = 12,551.50 : x
  2. Step 2: Convert to fraction form
    28,133.88/42,206.51 = 12,551.50/x
  3. Step 3: Cross multiply
    28,133.88x = 42,206.51 × 12,551.50
  4. Step 4: Simplify right side
    28,133.88x = 529,755,010.27
  5. Step 5: Solve for x
    x = 529,755,010.27/28,133.88
  6. Step 6: Final answer
    x = 18,829.79

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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.