Home / 16,897.20-25,345.80-12,960.60

Finding the Fourth Proportional to 16,897.20, 25,345.80 and 12,960.60

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Solution

The fourth proportional to 16,897.20, 25,345.80 and 12,960.60 is: 19,440.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,897.20 : 25,345.80 = 12,960.60 : x
  2. Step 2: Convert to fraction form
    16,897.20/25,345.80 = 12,960.60/x
  3. Step 3: Cross multiply
    16,897.20x = 25,345.80 × 12,960.60
  4. Step 4: Simplify right side
    16,897.20x = 328,496,775.48
  5. Step 5: Solve for x
    x = 328,496,775.48/16,897.20
  6. Step 6: Final answer
    x = 19,440.90

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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.