Home / 19,106.76-28,661.96-7,420.89

Finding the Fourth Proportional to 19,106.76, 28,661.96 and 7,420.89

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Solution

The fourth proportional to 19,106.76, 28,661.96 and 7,420.89 is: 11,132.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,106.76 : 28,661.96 = 7,420.89 : x
  2. Step 2: Convert to fraction form
    19,106.76/28,661.96 = 7,420.89/x
  3. Step 3: Cross multiply
    19,106.76x = 28,661.96 × 7,420.89
  4. Step 4: Simplify right side
    19,106.76x = 212,697,252.34
  5. Step 5: Solve for x
    x = 212,697,252.34/19,106.76
  6. Step 6: Final answer
    x = 11,132.04

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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.