Home / 10,887.08-16,304.70-8,403.80

Finding the Fourth Proportional to 10,887.08, 16,304.70 and 8,403.80

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Solution

The fourth proportional to 10,887.08, 16,304.70 and 8,403.80 is: 12,585.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.08 : 16,304.70 = 8,403.80 : x
  2. Step 2: Convert to fraction form
    10,887.08/16,304.70 = 8,403.80/x
  3. Step 3: Cross multiply
    10,887.08x = 16,304.70 × 8,403.80
  4. Step 4: Simplify right side
    10,887.08x = 137,021,437.86
  5. Step 5: Solve for x
    x = 137,021,437.86/10,887.08
  6. Step 6: Final answer
    x = 12,585.69

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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.