Home / 12,582.54-18,878.47-5,187.65

Finding the Fourth Proportional to 12,582.54, 18,878.47 and 5,187.65

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Solution

The fourth proportional to 12,582.54, 18,878.47 and 5,187.65 is: 7,783.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,582.54 : 18,878.47 = 5,187.65 : x
  2. Step 2: Convert to fraction form
    12,582.54/18,878.47 = 5,187.65/x
  3. Step 3: Cross multiply
    12,582.54x = 18,878.47 × 5,187.65
  4. Step 4: Simplify right side
    12,582.54x = 97,934,787.53
  5. Step 5: Solve for x
    x = 97,934,787.53/12,582.54
  6. Step 6: Final answer
    x = 7,783.39

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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.