Home / 11,815.50-16,305.39-6,510.32

Finding the Fourth Proportional to 11,815.50, 16,305.39 and 6,510.32

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Solution

The fourth proportional to 11,815.50, 16,305.39 and 6,510.32 is: 8,984.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.50 : 16,305.39 = 6,510.32 : x
  2. Step 2: Convert to fraction form
    11,815.50/16,305.39 = 6,510.32/x
  3. Step 3: Cross multiply
    11,815.50x = 16,305.39 × 6,510.32
  4. Step 4: Simplify right side
    11,815.50x = 106,153,225.10
  5. Step 5: Solve for x
    x = 106,153,225.10/11,815.50
  6. Step 6: Final answer
    x = 8,984.23

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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.