Home / 28,381.16-39,172.56-16,451.12

Finding the Fourth Proportional to 28,381.16, 39,172.56 and 16,451.12

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Solution

The fourth proportional to 28,381.16, 39,172.56 and 16,451.12 is: 22,706.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,381.16 : 39,172.56 = 16,451.12 : x
  2. Step 2: Convert to fraction form
    28,381.16/39,172.56 = 16,451.12/x
  3. Step 3: Cross multiply
    28,381.16x = 39,172.56 × 16,451.12
  4. Step 4: Simplify right side
    28,381.16x = 644,432,485.27
  5. Step 5: Solve for x
    x = 644,432,485.27/28,381.16
  6. Step 6: Final answer
    x = 22,706.35

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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.