Home / 11,525.76-15,904.40-6,489.84

Finding the Fourth Proportional to 11,525.76, 15,904.40 and 6,489.84

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Solution

The fourth proportional to 11,525.76, 15,904.40 and 6,489.84 is: 8,955.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,525.76 : 15,904.40 = 6,489.84 : x
  2. Step 2: Convert to fraction form
    11,525.76/15,904.40 = 6,489.84/x
  3. Step 3: Cross multiply
    11,525.76x = 15,904.40 × 6,489.84
  4. Step 4: Simplify right side
    11,525.76x = 103,217,011.30
  5. Step 5: Solve for x
    x = 103,217,011.30/11,525.76
  6. Step 6: Final answer
    x = 8,955.33

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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.