Home / 11,148.40-15,395.21-7,176.41

Finding the Fourth Proportional to 11,148.40, 15,395.21 and 7,176.41

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Solution

The fourth proportional to 11,148.40, 15,395.21 and 7,176.41 is: 9,910.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.40 : 15,395.21 = 7,176.41 : x
  2. Step 2: Convert to fraction form
    11,148.40/15,395.21 = 7,176.41/x
  3. Step 3: Cross multiply
    11,148.40x = 15,395.21 × 7,176.41
  4. Step 4: Simplify right side
    11,148.40x = 110,482,339.00
  5. Step 5: Solve for x
    x = 110,482,339.00/11,148.40
  6. Step 6: Final answer
    x = 9,910.15

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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.