Home / 11,931.40-16,464.74-6,626.12

Finding the Fourth Proportional to 11,931.40, 16,464.74 and 6,626.12

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Solution

The fourth proportional to 11,931.40, 16,464.74 and 6,626.12 is: 9,143.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.40 : 16,464.74 = 6,626.12 : x
  2. Step 2: Convert to fraction form
    11,931.40/16,464.74 = 6,626.12/x
  3. Step 3: Cross multiply
    11,931.40x = 16,464.74 × 6,626.12
  4. Step 4: Simplify right side
    11,931.40x = 109,097,343.01
  5. Step 5: Solve for x
    x = 109,097,343.01/11,931.40
  6. Step 6: Final answer
    x = 9,143.72

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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.