Home / 21,581.96-29,777.70-16,551.40

Finding the Fourth Proportional to 21,581.96, 29,777.70 and 16,551.40

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Solution

The fourth proportional to 21,581.96, 29,777.70 and 16,551.40 is: 22,836.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.96 : 29,777.70 = 16,551.40 : x
  2. Step 2: Convert to fraction form
    21,581.96/29,777.70 = 16,551.40/x
  3. Step 3: Cross multiply
    21,581.96x = 29,777.70 × 16,551.40
  4. Step 4: Simplify right side
    21,581.96x = 492,862,623.78
  5. Step 5: Solve for x
    x = 492,862,623.78/21,581.96
  6. Step 6: Final answer
    x = 22,836.79

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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.