Home / 12,325.52-16,991.40-9,808.66

Finding the Fourth Proportional to 12,325.52, 16,991.40 and 9,808.66

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Solution

The fourth proportional to 12,325.52, 16,991.40 and 9,808.66 is: 13,521.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.52 : 16,991.40 = 9,808.66 : x
  2. Step 2: Convert to fraction form
    12,325.52/16,991.40 = 9,808.66/x
  3. Step 3: Cross multiply
    12,325.52x = 16,991.40 × 9,808.66
  4. Step 4: Simplify right side
    12,325.52x = 166,662,865.52
  5. Step 5: Solve for x
    x = 166,662,865.52/12,325.52
  6. Step 6: Final answer
    x = 13,521.77

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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.