Home / 21,603.12-29,810.52-12,174

Finding the Fourth Proportional to 21,603.12, 29,810.52 and 12,174

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Solution

The fourth proportional to 21,603.12, 29,810.52 and 12,174 is: 16,799.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,603.12 : 29,810.52 = 12,174 : x
  2. Step 2: Convert to fraction form
    21,603.12/29,810.52 = 12,174/x
  3. Step 3: Cross multiply
    21,603.12x = 29,810.52 × 12,174
  4. Step 4: Simplify right side
    21,603.12x = 362,913,270.48
  5. Step 5: Solve for x
    x = 362,913,270.48/21,603.12
  6. Step 6: Final answer
    x = 16,799.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.