Home / 12,385.92-18,538.74-9,098.28

Finding the Fourth Proportional to 12,385.92, 18,538.74 and 9,098.28

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Solution

The fourth proportional to 12,385.92, 18,538.74 and 9,098.28 is: 13,617.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.92 : 18,538.74 = 9,098.28 : x
  2. Step 2: Convert to fraction form
    12,385.92/18,538.74 = 9,098.28/x
  3. Step 3: Cross multiply
    12,385.92x = 18,538.74 × 9,098.28
  4. Step 4: Simplify right side
    12,385.92x = 168,670,647.37
  5. Step 5: Solve for x
    x = 168,670,647.37/12,385.92
  6. Step 6: Final answer
    x = 13,617.93

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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.