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Finding the Fourth Proportional to 10,860.46, 16,290.68 and 6,989.46

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Solution

The fourth proportional to 10,860.46, 16,290.68 and 6,989.46 is: 10,484.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,860.46 : 16,290.68 = 6,989.46 : x
  2. Step 2: Convert to fraction form
    10,860.46/16,290.68 = 6,989.46/x
  3. Step 3: Cross multiply
    10,860.46x = 16,290.68 × 6,989.46
  4. Step 4: Simplify right side
    10,860.46x = 113,863,056.23
  5. Step 5: Solve for x
    x = 113,863,056.23/10,860.46
  6. Step 6: Final answer
    x = 10,484.18

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Half scale
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Double scale
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Similar ratio
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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.