Home / 28,515.48-42,750.10-11,887.98

Finding the Fourth Proportional to 28,515.48, 42,750.10 and 11,887.98

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Solution

The fourth proportional to 28,515.48, 42,750.10 and 11,887.98 is: 17,822.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.48 : 42,750.10 = 11,887.98 : x
  2. Step 2: Convert to fraction form
    28,515.48/42,750.10 = 11,887.98/x
  3. Step 3: Cross multiply
    28,515.48x = 42,750.10 × 11,887.98
  4. Step 4: Simplify right side
    28,515.48x = 508,212,333.80
  5. Step 5: Solve for x
    x = 508,212,333.80/28,515.48
  6. Step 6: Final answer
    x = 17,822.33

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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.