Home / 21,374.12-29,469.30-13,807.64

Finding the Fourth Proportional to 21,374.12, 29,469.30 and 13,807.64

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Solution

The fourth proportional to 21,374.12, 29,469.30 and 13,807.64 is: 19,037.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.12 : 29,469.30 = 13,807.64 : x
  2. Step 2: Convert to fraction form
    21,374.12/29,469.30 = 13,807.64/x
  3. Step 3: Cross multiply
    21,374.12x = 29,469.30 × 13,807.64
  4. Step 4: Simplify right side
    21,374.12x = 406,901,485.45
  5. Step 5: Solve for x
    x = 406,901,485.45/21,374.12
  6. Step 6: Final answer
    x = 19,037.11

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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.