Home / 21,595.38-29,809.08-12,645.76

Finding the Fourth Proportional to 21,595.38, 29,809.08 and 12,645.76

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Solution

The fourth proportional to 21,595.38, 29,809.08 and 12,645.76 is: 17,455.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,595.38 : 29,809.08 = 12,645.76 : x
  2. Step 2: Convert to fraction form
    21,595.38/29,809.08 = 12,645.76/x
  3. Step 3: Cross multiply
    21,595.38x = 29,809.08 × 12,645.76
  4. Step 4: Simplify right side
    21,595.38x = 376,958,471.50
  5. Step 5: Solve for x
    x = 376,958,471.50/21,595.38
  6. Step 6: Final answer
    x = 17,455.51

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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.