Home / 28,355.15-39,132.36-16,418.69

Finding the Fourth Proportional to 28,355.15, 39,132.36 and 16,418.69

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Solution

The fourth proportional to 28,355.15, 39,132.36 and 16,418.69 is: 22,659.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.15 : 39,132.36 = 16,418.69 : x
  2. Step 2: Convert to fraction form
    28,355.15/39,132.36 = 16,418.69/x
  3. Step 3: Cross multiply
    28,355.15x = 39,132.36 × 16,418.69
  4. Step 4: Simplify right side
    28,355.15x = 642,501,892.15
  5. Step 5: Solve for x
    x = 642,501,892.15/28,355.15
  6. Step 6: Final answer
    x = 22,659.09

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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.