Home / 21,057.60-29,056.80-12,106.56

Finding the Fourth Proportional to 21,057.60, 29,056.80 and 12,106.56

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Solution

The fourth proportional to 21,057.60, 29,056.80 and 12,106.56 is: 16,705.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.60 : 29,056.80 = 12,106.56 : x
  2. Step 2: Convert to fraction form
    21,057.60/29,056.80 = 12,106.56/x
  3. Step 3: Cross multiply
    21,057.60x = 29,056.80 × 12,106.56
  4. Step 4: Simplify right side
    21,057.60x = 351,777,892.61
  5. Step 5: Solve for x
    x = 351,777,892.61/21,057.60
  6. Step 6: Final answer
    x = 16,705.51

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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.