Home / 11,815.40-16,305.30-6,510.21

Finding the Fourth Proportional to 11,815.40, 16,305.30 and 6,510.21

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Solution

The fourth proportional to 11,815.40, 16,305.30 and 6,510.21 is: 8,984.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.40 : 16,305.30 = 6,510.21 : x
  2. Step 2: Convert to fraction form
    11,815.40/16,305.30 = 6,510.21/x
  3. Step 3: Cross multiply
    11,815.40x = 16,305.30 × 6,510.21
  4. Step 4: Simplify right side
    11,815.40x = 106,150,927.11
  5. Step 5: Solve for x
    x = 106,150,927.11/11,815.40
  6. Step 6: Final answer
    x = 8,984.12

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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.