Home / 12,645.45-18,957.87-4,743.53

Finding the Fourth Proportional to 12,645.45, 18,957.87 and 4,743.53

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Solution

The fourth proportional to 12,645.45, 18,957.87 and 4,743.53 is: 7,111.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.45 : 18,957.87 = 4,743.53 : x
  2. Step 2: Convert to fraction form
    12,645.45/18,957.87 = 4,743.53/x
  3. Step 3: Cross multiply
    12,645.45x = 18,957.87 × 4,743.53
  4. Step 4: Simplify right side
    12,645.45x = 89,927,130.29
  5. Step 5: Solve for x
    x = 89,927,130.29/12,645.45
  6. Step 6: Final answer
    x = 7,111.42

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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.