Home / 21,056.19-29,057.54-12,105.45

Finding the Fourth Proportional to 21,056.19, 29,057.54 and 12,105.45

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Solution

The fourth proportional to 21,056.19, 29,057.54 and 12,105.45 is: 16,705.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.19 : 29,057.54 = 12,105.45 : x
  2. Step 2: Convert to fraction form
    21,056.19/29,057.54 = 12,105.45/x
  3. Step 3: Cross multiply
    21,056.19x = 29,057.54 × 12,105.45
  4. Step 4: Simplify right side
    21,056.19x = 351,754,537.07
  5. Step 5: Solve for x
    x = 351,754,537.07/21,056.19
  6. Step 6: Final answer
    x = 16,705.52

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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.