Home / 21,471.07-29,624.02-13,917.72

Finding the Fourth Proportional to 21,471.07, 29,624.02 and 13,917.72

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Solution

The fourth proportional to 21,471.07, 29,624.02 and 13,917.72 is: 19,202.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,471.07 : 29,624.02 = 13,917.72 : x
  2. Step 2: Convert to fraction form
    21,471.07/29,624.02 = 13,917.72/x
  3. Step 3: Cross multiply
    21,471.07x = 29,624.02 × 13,917.72
  4. Step 4: Simplify right side
    21,471.07x = 412,298,815.63
  5. Step 5: Solve for x
    x = 412,298,815.63/21,471.07
  6. Step 6: Final answer
    x = 19,202.53

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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.