Home / 28,451.16-39,263.67-15,878.34

Finding the Fourth Proportional to 28,451.16, 39,263.67 and 15,878.34

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Solution

The fourth proportional to 28,451.16, 39,263.67 and 15,878.34 is: 21,912.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.16 : 39,263.67 = 15,878.34 : x
  2. Step 2: Convert to fraction form
    28,451.16/39,263.67 = 15,878.34/x
  3. Step 3: Cross multiply
    28,451.16x = 39,263.67 × 15,878.34
  4. Step 4: Simplify right side
    28,451.16x = 623,441,901.91
  5. Step 5: Solve for x
    x = 623,441,901.91/28,451.16
  6. Step 6: Final answer
    x = 21,912.71

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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.