Home / 21,465.65-29,624.31-11,906.48

Finding the Fourth Proportional to 21,465.65, 29,624.31 and 11,906.48

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Solution

The fourth proportional to 21,465.65, 29,624.31 and 11,906.48 is: 16,431.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,465.65 : 29,624.31 = 11,906.48 : x
  2. Step 2: Convert to fraction form
    21,465.65/29,624.31 = 11,906.48/x
  3. Step 3: Cross multiply
    21,465.65x = 29,624.31 × 11,906.48
  4. Step 4: Simplify right side
    21,465.65x = 352,721,106.41
  5. Step 5: Solve for x
    x = 352,721,106.41/21,465.65
  6. Step 6: Final answer
    x = 16,431.89

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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.