Home / 21,435.45-29,580.92-11,875.96

Finding the Fourth Proportional to 21,435.45, 29,580.92 and 11,875.96

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Solution

The fourth proportional to 21,435.45, 29,580.92 and 11,875.96 is: 16,388.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.45 : 29,580.92 = 11,875.96 : x
  2. Step 2: Convert to fraction form
    21,435.45/29,580.92 = 11,875.96/x
  3. Step 3: Cross multiply
    21,435.45x = 29,580.92 × 11,875.96
  4. Step 4: Simplify right side
    21,435.45x = 351,301,763.30
  5. Step 5: Solve for x
    x = 351,301,763.30/21,435.45
  6. Step 6: Final answer
    x = 16,388.82

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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.