Home / 21,273.48-29,357.00-13,320.09

Finding the Fourth Proportional to 21,273.48, 29,357.00 and 13,320.09

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Solution

The fourth proportional to 21,273.48, 29,357.00 and 13,320.09 is: 18,381.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.48 : 29,357.00 = 13,320.09 : x
  2. Step 2: Convert to fraction form
    21,273.48/29,357.00 = 13,320.09/x
  3. Step 3: Cross multiply
    21,273.48x = 29,357.00 × 13,320.09
  4. Step 4: Simplify right side
    21,273.48x = 391,037,815.53
  5. Step 5: Solve for x
    x = 391,037,815.53/21,273.48
  6. Step 6: Final answer
    x = 18,381.47

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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.