Home / 21,329.98-29,425.83-12,372.28

Finding the Fourth Proportional to 21,329.98, 29,425.83 and 12,372.28

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Solution

The fourth proportional to 21,329.98, 29,425.83 and 12,372.28 is: 17,068.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.98 : 29,425.83 = 12,372.28 : x
  2. Step 2: Convert to fraction form
    21,329.98/29,425.83 = 12,372.28/x
  3. Step 3: Cross multiply
    21,329.98x = 29,425.83 × 12,372.28
  4. Step 4: Simplify right side
    21,329.98x = 364,064,607.99
  5. Step 5: Solve for x
    x = 364,064,607.99/21,329.98
  6. Step 6: Final answer
    x = 17,068.21

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1.5x scale

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.