Home / 11,455.12-15,807.70-6,739.72

Finding the Fourth Proportional to 11,455.12, 15,807.70 and 6,739.72

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Solution

The fourth proportional to 11,455.12, 15,807.70 and 6,739.72 is: 9,300.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.12 : 15,807.70 = 6,739.72 : x
  2. Step 2: Convert to fraction form
    11,455.12/15,807.70 = 6,739.72/x
  3. Step 3: Cross multiply
    11,455.12x = 15,807.70 × 6,739.72
  4. Step 4: Simplify right side
    11,455.12x = 106,539,471.84
  5. Step 5: Solve for x
    x = 106,539,471.84/11,455.12
  6. Step 6: Final answer
    x = 9,300.60

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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.