Home / 28,355.38-39,130.44-16,419.35

Finding the Fourth Proportional to 28,355.38, 39,130.44 and 16,419.35

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Solution

The fourth proportional to 28,355.38, 39,130.44 and 16,419.35 is: 22,658.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.38 : 39,130.44 = 16,419.35 : x
  2. Step 2: Convert to fraction form
    28,355.38/39,130.44 = 16,419.35/x
  3. Step 3: Cross multiply
    28,355.38x = 39,130.44 × 16,419.35
  4. Step 4: Simplify right side
    28,355.38x = 642,496,390.01
  5. Step 5: Solve for x
    x = 642,496,390.01/28,355.38
  6. Step 6: Final answer
    x = 22,658.71

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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.