Home / 12,665.58-18,998.64-4,345.53

Finding the Fourth Proportional to 12,665.58, 18,998.64 and 4,345.53

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Solution

The fourth proportional to 12,665.58, 18,998.64 and 4,345.53 is: 6,518.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.58 : 18,998.64 = 4,345.53 : x
  2. Step 2: Convert to fraction form
    12,665.58/18,998.64 = 4,345.53/x
  3. Step 3: Cross multiply
    12,665.58x = 18,998.64 × 4,345.53
  4. Step 4: Simplify right side
    12,665.58x = 82,559,160.08
  5. Step 5: Solve for x
    x = 82,559,160.08/12,665.58
  6. Step 6: Final answer
    x = 6,518.39

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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.