Home / 12,300.08-18,455.54-6,455.28

Finding the Fourth Proportional to 12,300.08, 18,455.54 and 6,455.28

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Solution

The fourth proportional to 12,300.08, 18,455.54 and 6,455.28 is: 9,685.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,300.08 : 18,455.54 = 6,455.28 : x
  2. Step 2: Convert to fraction form
    12,300.08/18,455.54 = 6,455.28/x
  3. Step 3: Cross multiply
    12,300.08x = 18,455.54 × 6,455.28
  4. Step 4: Simplify right side
    12,300.08x = 119,135,678.25
  5. Step 5: Solve for x
    x = 119,135,678.25/12,300.08
  6. Step 6: Final answer
    x = 9,685.76

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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.