Home / 28,520.12-39,362.63-16,590.38

Finding the Fourth Proportional to 28,520.12, 39,362.63 and 16,590.38

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Solution

The fourth proportional to 28,520.12, 39,362.63 and 16,590.38 is: 22,897.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.12 : 39,362.63 = 16,590.38 : x
  2. Step 2: Convert to fraction form
    28,520.12/39,362.63 = 16,590.38/x
  3. Step 3: Cross multiply
    28,520.12x = 39,362.63 × 16,590.38
  4. Step 4: Simplify right side
    28,520.12x = 653,040,989.50
  5. Step 5: Solve for x
    x = 653,040,989.50/28,520.12
  6. Step 6: Final answer
    x = 22,897.55

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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.