Home / 13,316.10-19,970.70-3,953.89

Finding the Fourth Proportional to 13,316.10, 19,970.70 and 3,953.89

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Solution

The fourth proportional to 13,316.10, 19,970.70 and 3,953.89 is: 5,929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.10 : 19,970.70 = 3,953.89 : x
  2. Step 2: Convert to fraction form
    13,316.10/19,970.70 = 3,953.89/x
  3. Step 3: Cross multiply
    13,316.10x = 19,970.70 × 3,953.89
  4. Step 4: Simplify right side
    13,316.10x = 78,961,951.02
  5. Step 5: Solve for x
    x = 78,961,951.02/13,316.10
  6. Step 6: Final answer
    x = 5,929.81

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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.