Home / 11,453.12-15,686.87-10,780.64

Finding the Fourth Proportional to 11,453.12, 15,686.87 and 10,780.64

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Solution

The fourth proportional to 11,453.12, 15,686.87 and 10,780.64 is: 14,765.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,453.12 : 15,686.87 = 10,780.64 : x
  2. Step 2: Convert to fraction form
    11,453.12/15,686.87 = 10,780.64/x
  3. Step 3: Cross multiply
    11,453.12x = 15,686.87 × 10,780.64
  4. Step 4: Simplify right side
    11,453.12x = 169,114,498.20
  5. Step 5: Solve for x
    x = 169,114,498.20/11,453.12
  6. Step 6: Final answer
    x = 14,765.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.