Home / 28,192.21-38,905.25-15,616.96

Finding the Fourth Proportional to 28,192.21, 38,905.25 and 15,616.96

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Solution

The fourth proportional to 28,192.21, 38,905.25 and 15,616.96 is: 21,551.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,192.21 : 38,905.25 = 15,616.96 : x
  2. Step 2: Convert to fraction form
    28,192.21/38,905.25 = 15,616.96/x
  3. Step 3: Cross multiply
    28,192.21x = 38,905.25 × 15,616.96
  4. Step 4: Simplify right side
    28,192.21x = 607,581,572.33
  5. Step 5: Solve for x
    x = 607,581,572.33/28,192.21
  6. Step 6: Final answer
    x = 21,551.40

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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.