Home / 21,462.78-29,619.90-12,032.76

Finding the Fourth Proportional to 21,462.78, 29,619.90 and 12,032.76

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Solution

The fourth proportional to 21,462.78, 29,619.90 and 12,032.76 is: 16,605.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,462.78 : 29,619.90 = 12,032.76 : x
  2. Step 2: Convert to fraction form
    21,462.78/29,619.90 = 12,032.76/x
  3. Step 3: Cross multiply
    21,462.78x = 29,619.90 × 12,032.76
  4. Step 4: Simplify right side
    21,462.78x = 356,409,147.92
  5. Step 5: Solve for x
    x = 356,409,147.92/21,462.78
  6. Step 6: Final answer
    x = 16,605.92

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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.