Home / 10,305.64-15,423.90-8,456.68

Finding the Fourth Proportional to 10,305.64, 15,423.90 and 8,456.68

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Solution

The fourth proportional to 10,305.64, 15,423.90 and 8,456.68 is: 12,656.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,305.64 : 15,423.90 = 8,456.68 : x
  2. Step 2: Convert to fraction form
    10,305.64/15,423.90 = 8,456.68/x
  3. Step 3: Cross multiply
    10,305.64x = 15,423.90 × 8,456.68
  4. Step 4: Simplify right side
    10,305.64x = 130,434,986.65
  5. Step 5: Solve for x
    x = 130,434,986.65/10,305.64
  6. Step 6: Final answer
    x = 12,656.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.