Home / 11,124.28-15,347.14-7,144.84

Finding the Fourth Proportional to 11,124.28, 15,347.14 and 7,144.84

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Solution

The fourth proportional to 11,124.28, 15,347.14 and 7,144.84 is: 9,857.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,124.28 : 15,347.14 = 7,144.84 : x
  2. Step 2: Convert to fraction form
    11,124.28/15,347.14 = 7,144.84/x
  3. Step 3: Cross multiply
    11,124.28x = 15,347.14 × 7,144.84
  4. Step 4: Simplify right side
    11,124.28x = 109,652,859.76
  5. Step 5: Solve for x
    x = 109,652,859.76/11,124.28
  6. Step 6: Final answer
    x = 9,857.07

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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.