Home / 16,931.88-23,366.16-9,378.36

Finding the Fourth Proportional to 16,931.88, 23,366.16 and 9,378.36

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Solution

The fourth proportional to 16,931.88, 23,366.16 and 9,378.36 is: 12,942.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,931.88 : 23,366.16 = 9,378.36 : x
  2. Step 2: Convert to fraction form
    16,931.88/23,366.16 = 9,378.36/x
  3. Step 3: Cross multiply
    16,931.88x = 23,366.16 × 9,378.36
  4. Step 4: Simplify right side
    16,931.88x = 219,136,260.30
  5. Step 5: Solve for x
    x = 219,136,260.30/16,931.88
  6. Step 6: Final answer
    x = 12,942.23

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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.