Home / 28,150.30-42,218.70-16,278.40

Finding the Fourth Proportional to 28,150.30, 42,218.70 and 16,278.40

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Solution

The fourth proportional to 28,150.30, 42,218.70 and 16,278.40 is: 24,413.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,150.30 : 42,218.70 = 16,278.40 : x
  2. Step 2: Convert to fraction form
    28,150.30/42,218.70 = 16,278.40/x
  3. Step 3: Cross multiply
    28,150.30x = 42,218.70 × 16,278.40
  4. Step 4: Simplify right side
    28,150.30x = 687,252,886.08
  5. Step 5: Solve for x
    x = 687,252,886.08/28,150.30
  6. Step 6: Final answer
    x = 24,413.70

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1.5x scale

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.