Home / 28,956.90-39,960.12-16,381.64

Finding the Fourth Proportional to 28,956.90, 39,960.12 and 16,381.64

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Solution

The fourth proportional to 28,956.90, 39,960.12 and 16,381.64 is: 22,606.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,956.90 : 39,960.12 = 16,381.64 : x
  2. Step 2: Convert to fraction form
    28,956.90/39,960.12 = 16,381.64/x
  3. Step 3: Cross multiply
    28,956.90x = 39,960.12 × 16,381.64
  4. Step 4: Simplify right side
    28,956.90x = 654,612,300.20
  5. Step 5: Solve for x
    x = 654,612,300.20/28,956.90
  6. Step 6: Final answer
    x = 22,606.44

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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.