Home / 13,898.08-19,180.36-7,929.88

Finding the Fourth Proportional to 13,898.08, 19,180.36 and 7,929.88

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Solution

The fourth proportional to 13,898.08, 19,180.36 and 7,929.88 is: 10,943.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,898.08 : 19,180.36 = 7,929.88 : x
  2. Step 2: Convert to fraction form
    13,898.08/19,180.36 = 7,929.88/x
  3. Step 3: Cross multiply
    13,898.08x = 19,180.36 × 7,929.88
  4. Step 4: Simplify right side
    13,898.08x = 152,097,953.16
  5. Step 5: Solve for x
    x = 152,097,953.16/13,898.08
  6. Step 6: Final answer
    x = 10,943.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.