Home / 21,330.98-29,427.21-12,373.28

Finding the Fourth Proportional to 21,330.98, 29,427.21 and 12,373.28

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Solution

The fourth proportional to 21,330.98, 29,427.21 and 12,373.28 is: 17,069.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.98 : 29,427.21 = 12,373.28 : x
  2. Step 2: Convert to fraction form
    21,330.98/29,427.21 = 12,373.28/x
  3. Step 3: Cross multiply
    21,330.98x = 29,427.21 × 12,373.28
  4. Step 4: Simplify right side
    21,330.98x = 364,111,108.95
  5. Step 5: Solve for x
    x = 364,111,108.95/21,330.98
  6. Step 6: Final answer
    x = 17,069.59

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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.