Home / 12,071.76-18,110.64-4,281.36

Finding the Fourth Proportional to 12,071.76, 18,110.64 and 4,281.36

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Solution

The fourth proportional to 12,071.76, 18,110.64 and 4,281.36 is: 6,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,071.76 : 18,110.64 = 4,281.36 : x
  2. Step 2: Convert to fraction form
    12,071.76/18,110.64 = 4,281.36/x
  3. Step 3: Cross multiply
    12,071.76x = 18,110.64 × 4,281.36
  4. Step 4: Simplify right side
    12,071.76x = 77,538,169.67
  5. Step 5: Solve for x
    x = 77,538,169.67/12,071.76
  6. Step 6: Final answer
    x = 6,423.10

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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.