Home / 12,580.03-18,878.55-4,788.64

Finding the Fourth Proportional to 12,580.03, 18,878.55 and 4,788.64

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Solution

The fourth proportional to 12,580.03, 18,878.55 and 4,788.64 is: 7,186.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,580.03 : 18,878.55 = 4,788.64 : x
  2. Step 2: Convert to fraction form
    12,580.03/18,878.55 = 4,788.64/x
  3. Step 3: Cross multiply
    12,580.03x = 18,878.55 × 4,788.64
  4. Step 4: Simplify right side
    12,580.03x = 90,402,579.67
  5. Step 5: Solve for x
    x = 90,402,579.67/12,580.03
  6. Step 6: Final answer
    x = 7,186.20

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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.