Home / 28,402.11-42,622.61-13,621.23

Finding the Fourth Proportional to 28,402.11, 42,622.61 and 13,621.23

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Solution

The fourth proportional to 28,402.11, 42,622.61 and 13,621.23 is: 20,441.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,402.11 : 42,622.61 = 13,621.23 : x
  2. Step 2: Convert to fraction form
    28,402.11/42,622.61 = 13,621.23/x
  3. Step 3: Cross multiply
    28,402.11x = 42,622.61 × 13,621.23
  4. Step 4: Simplify right side
    28,402.11x = 580,572,305.90
  5. Step 5: Solve for x
    x = 580,572,305.90/28,402.11
  6. Step 6: Final answer
    x = 20,441.17

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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.