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Finding the Fourth Proportional to 12,236.58, 16,886.87 and 6,931.28

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Solution

The fourth proportional to 12,236.58, 16,886.87 and 6,931.28 is: 9,565.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,236.58 : 16,886.87 = 6,931.28 : x
  2. Step 2: Convert to fraction form
    12,236.58/16,886.87 = 6,931.28/x
  3. Step 3: Cross multiply
    12,236.58x = 16,886.87 × 6,931.28
  4. Step 4: Simplify right side
    12,236.58x = 117,047,624.29
  5. Step 5: Solve for x
    x = 117,047,624.29/12,236.58
  6. Step 6: Final answer
    x = 9,565.39

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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.