Home / 11,931.78-16,466.31-6,626.99

Finding the Fourth Proportional to 11,931.78, 16,466.31 and 6,626.99

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Solution

The fourth proportional to 11,931.78, 16,466.31 and 6,626.99 is: 9,145.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.78 : 16,466.31 = 6,626.99 : x
  2. Step 2: Convert to fraction form
    11,931.78/16,466.31 = 6,626.99/x
  3. Step 3: Cross multiply
    11,931.78x = 16,466.31 × 6,626.99
  4. Step 4: Simplify right side
    11,931.78x = 109,122,071.71
  5. Step 5: Solve for x
    x = 109,122,071.71/11,931.78
  6. Step 6: Final answer
    x = 9,145.50

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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.