Home / 21,569.07-29,765.54-12,135.81

Finding the Fourth Proportional to 21,569.07, 29,765.54 and 12,135.81

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Solution

The fourth proportional to 21,569.07, 29,765.54 and 12,135.81 is: 16,747.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,569.07 : 29,765.54 = 12,135.81 : x
  2. Step 2: Convert to fraction form
    21,569.07/29,765.54 = 12,135.81/x
  3. Step 3: Cross multiply
    21,569.07x = 29,765.54 × 12,135.81
  4. Step 4: Simplify right side
    21,569.07x = 361,228,937.99
  5. Step 5: Solve for x
    x = 361,228,937.99/21,569.07
  6. Step 6: Final answer
    x = 16,747.54

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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.