Home / 10,971.66-16,419.18-8,974.20

Finding the Fourth Proportional to 10,971.66, 16,419.18 and 8,974.20

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Solution

The fourth proportional to 10,971.66, 16,419.18 and 8,974.20 is: 13,429.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,971.66 : 16,419.18 = 8,974.20 : x
  2. Step 2: Convert to fraction form
    10,971.66/16,419.18 = 8,974.20/x
  3. Step 3: Cross multiply
    10,971.66x = 16,419.18 × 8,974.20
  4. Step 4: Simplify right side
    10,971.66x = 147,349,005.16
  5. Step 5: Solve for x
    x = 147,349,005.16/10,971.66
  6. Step 6: Final answer
    x = 13,429.96

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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.