Home / 28,721.34-43,088.90-13,912.95

Finding the Fourth Proportional to 28,721.34, 43,088.90 and 13,912.95

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Solution

The fourth proportional to 28,721.34, 43,088.90 and 13,912.95 is: 20,872.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.34 : 43,088.90 = 13,912.95 : x
  2. Step 2: Convert to fraction form
    28,721.34/43,088.90 = 13,912.95/x
  3. Step 3: Cross multiply
    28,721.34x = 43,088.90 × 13,912.95
  4. Step 4: Simplify right side
    28,721.34x = 599,493,641.69
  5. Step 5: Solve for x
    x = 599,493,641.69/28,721.34
  6. Step 6: Final answer
    x = 20,872.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.