Home / 21,349.98-29,462.40-11,789.28

Finding the Fourth Proportional to 21,349.98, 29,462.40 and 11,789.28

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Solution

The fourth proportional to 21,349.98, 29,462.40 and 11,789.28 is: 16,268.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,349.98 : 29,462.40 = 11,789.28 : x
  2. Step 2: Convert to fraction form
    21,349.98/29,462.40 = 11,789.28/x
  3. Step 3: Cross multiply
    21,349.98x = 29,462.40 × 11,789.28
  4. Step 4: Simplify right side
    21,349.98x = 347,340,483.07
  5. Step 5: Solve for x
    x = 347,340,483.07/21,349.98
  6. Step 6: Final answer
    x = 16,268.89

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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.