Home / 11,489.27-15,860.48-7,715.07

Finding the Fourth Proportional to 11,489.27, 15,860.48 and 7,715.07

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Solution

The fourth proportional to 11,489.27, 15,860.48 and 7,715.07 is: 10,650.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,489.27 : 15,860.48 = 7,715.07 : x
  2. Step 2: Convert to fraction form
    11,489.27/15,860.48 = 7,715.07/x
  3. Step 3: Cross multiply
    11,489.27x = 15,860.48 × 7,715.07
  4. Step 4: Simplify right side
    11,489.27x = 122,364,674.86
  5. Step 5: Solve for x
    x = 122,364,674.86/11,489.27
  6. Step 6: Final answer
    x = 10,650.35

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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.