Home / 9,128.40-13,665.88-8,252.91

Finding the Fourth Proportional to 9,128.40, 13,665.88 and 8,252.91

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Solution

The fourth proportional to 9,128.40, 13,665.88 and 8,252.91 is: 12,355.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.40 : 13,665.88 = 8,252.91 : x
  2. Step 2: Convert to fraction form
    9,128.40/13,665.88 = 8,252.91/x
  3. Step 3: Cross multiply
    9,128.40x = 13,665.88 × 8,252.91
  4. Step 4: Simplify right side
    9,128.40x = 112,783,277.71
  5. Step 5: Solve for x
    x = 112,783,277.71/9,128.40
  6. Step 6: Final answer
    x = 12,355.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.