Home / 12,581.04-18,876.36-4,688.40

Finding the Fourth Proportional to 12,581.04, 18,876.36 and 4,688.40

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Solution

The fourth proportional to 12,581.04, 18,876.36 and 4,688.40 is: 7,034.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.04 : 18,876.36 = 4,688.40 : x
  2. Step 2: Convert to fraction form
    12,581.04/18,876.36 = 4,688.40/x
  3. Step 3: Cross multiply
    12,581.04x = 18,876.36 × 4,688.40
  4. Step 4: Simplify right side
    12,581.04x = 88,499,926.22
  5. Step 5: Solve for x
    x = 88,499,926.22/12,581.04
  6. Step 6: Final answer
    x = 7,034.39

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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.