Home / 12,125.36-16,731.50-7,647.42

Finding the Fourth Proportional to 12,125.36, 16,731.50 and 7,647.42

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Solution

The fourth proportional to 12,125.36, 16,731.50 and 7,647.42 is: 10,552.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.36 : 16,731.50 = 7,647.42 : x
  2. Step 2: Convert to fraction form
    12,125.36/16,731.50 = 7,647.42/x
  3. Step 3: Cross multiply
    12,125.36x = 16,731.50 × 7,647.42
  4. Step 4: Simplify right side
    12,125.36x = 127,952,807.73
  5. Step 5: Solve for x
    x = 127,952,807.73/12,125.36
  6. Step 6: Final answer
    x = 10,552.50

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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.