Home / 21,595.65-29,801.30-13,212.15

Finding the Fourth Proportional to 21,595.65, 29,801.30 and 13,212.15

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Solution

The fourth proportional to 21,595.65, 29,801.30 and 13,212.15 is: 18,232.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,595.65 : 29,801.30 = 13,212.15 : x
  2. Step 2: Convert to fraction form
    21,595.65/29,801.30 = 13,212.15/x
  3. Step 3: Cross multiply
    21,595.65x = 29,801.30 × 13,212.15
  4. Step 4: Simplify right side
    21,595.65x = 393,739,179.73
  5. Step 5: Solve for x
    x = 393,739,179.73/21,595.65
  6. Step 6: Final answer
    x = 18,232.34

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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.