Home / 28,420.64-42,579.87-16,727.48

Finding the Fourth Proportional to 28,420.64, 42,579.87 and 16,727.48

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Solution

The fourth proportional to 28,420.64, 42,579.87 and 16,727.48 is: 25,061.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,420.64 : 42,579.87 = 16,727.48 : x
  2. Step 2: Convert to fraction form
    28,420.64/42,579.87 = 16,727.48/x
  3. Step 3: Cross multiply
    28,420.64x = 42,579.87 × 16,727.48
  4. Step 4: Simplify right side
    28,420.64x = 712,253,710.93
  5. Step 5: Solve for x
    x = 712,253,710.93/28,420.64
  6. Step 6: Final answer
    x = 25,061.15

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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.