Home / 19,887.36-29,822.94-8,643.48

Finding the Fourth Proportional to 19,887.36, 29,822.94 and 8,643.48

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Solution

The fourth proportional to 19,887.36, 29,822.94 and 8,643.48 is: 12,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,887.36 : 29,822.94 = 8,643.48 : x
  2. Step 2: Convert to fraction form
    19,887.36/29,822.94 = 8,643.48/x
  3. Step 3: Cross multiply
    19,887.36x = 29,822.94 × 8,643.48
  4. Step 4: Simplify right side
    19,887.36x = 257,773,985.43
  5. Step 5: Solve for x
    x = 257,773,985.43/19,887.36
  6. Step 6: Final answer
    x = 12,961.70

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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.