Home / 11,925.64-16,443.36-9,680.44

Finding the Fourth Proportional to 11,925.64, 16,443.36 and 9,680.44

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Solution

The fourth proportional to 11,925.64, 16,443.36 and 9,680.44 is: 13,347.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,925.64 : 16,443.36 = 9,680.44 : x
  2. Step 2: Convert to fraction form
    11,925.64/16,443.36 = 9,680.44/x
  3. Step 3: Cross multiply
    11,925.64x = 16,443.36 × 9,680.44
  4. Step 4: Simplify right side
    11,925.64x = 159,178,959.88
  5. Step 5: Solve for x
    x = 159,178,959.88/11,925.64
  6. Step 6: Final answer
    x = 13,347.62

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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.